Showing posts with label SEAD. Show all posts
Showing posts with label SEAD. Show all posts

Thursday, January 23, 2014

The evolving budget situation: capabilities in the air - UPDATE






The International Military Helicopter conference has started this morning, and the top officers of the british Joint Helicopter Command have delivered speeches in which they shared some interesting news on the helicopters situation in the armed forces.

First of all, the theme is unsurprisingly about reductions. They confirmed that the Apache fleet is definitely going to shrink, and provided a vision of the frontline strength that the JHC will be able to offer as the current programmed numbers in the various fleets are reached. Specifically, the magic number is 148 airframes in frontline fleet.
The break down is reportedly as follows:

19 Puma HC2 (out of 24 in the total fleet)
46 Chinook (out of the around 60 in total that will be available when the HC6s are all delivered)
24 Wildcat AH1 (out of 34)
20 Merlin HC4 / 4A (HC3 / 3A until navalisation and life extension work will take place) (out of 25 in total)

This would leave some 39 aircraft out of the count, and this would be the Apache fleet, suggesting an expected total no higher than around 50.

Regarding Apache, the position of the army is clear: the future they want is the Apache Block III, now known in the US as AH-64E Apache Guardian. According to Brigadier Neil Sexton, deputy commander Joint Helicopter Command, the army expects to finalize the plan to transition to the Block III “in the next two years” and sign a contract for the new helicopters shortly afterwards, with the aim to get the helicopters before the end of the decade.
As anticipated already some time ago, the favored option appears to be using new-build airframes, transferring all the kit that is still valid from the current machines to the new ones. The excess engines, targeting sensors and other valuable components will be kept as spares. 

The UK originally procured 67 Apache AH-64D (Block I standard), but one has since been written off, leaving 66. The fleet of 67 was used to provide 48 machines in six frontline squadrons, 8 in one training squadron, 1 for development and trials, 1 for the Empire Test Pilot School and 9 for the Sustainment Fleet.
The buy of 67 aircraft was in itself a cut from an hoped 91 helicopters in 9 squadrons, one of which would have been the Royal Marines’s 847 NAS.

It is widely anticipated that the fleet will shrink to 4 frontline squadrons, perhaps with a fifth acting as a support formation for advanced conversion to role training, such as for ship operations, giving a frontline strength varying between 32 and 40. The Block III will compensate the reduction somewhat thanks to improved capabilities, including manned – unmanned teaming, which will allow the Apache to work closely together with the Watchkeeper UAV of the Royal Artillery, and other systems.

The JHC is also determined to acquire a new fleet of training helicopters which can act as surrogates, allowing crews to effectively train for their roles using less expensive machines than the frontline ones. The idea currently sees six helicopters of the new type, equipped with appropriate kit to simulate and replicate the actual frontline machine, assigned to each operating base.
This would be a separate activity from the training done at the Defence Helicopter Flying School at Shawbury. 

The same new type of helicopter would also ideally replace the Bell 212 used in support to training exercises, and could be assigned to 5th Regiment AAC for security support in Northern Ireland.
This suggests the possibility that this new helicopter would effectively replace the last Gazelles (OSD 2018).

On the naval front, there are confirmations that the Merlin HC3 navalisation and Life Extension program aims to install the same HM2 cockpit already in use on the ASW variant of the helicopter, so that the pilots will receive exactly the same training, with obvious advantages.
This suggests that in good time Merlin training for both fleets could be centralized on the Merlin Training Facility in Culdrose. Currently, the Merlin HC3 crews are trained in RAF Benson, while the Royal Navy’s HM2 crews are formed in Culdrose. 

HM2 cockpit
UPDATE: during the second day of the IMH event, some more info was released on the Merlin transition from RAF to Royal Navy. The current plan (still provisional in terms of exact date) sees 78 Sqn standing down in September, with 28 Sqn disbanding in mid-2015.
The Merlin force will transfer under Navy command this year, as soon as the manpower balance shifts in favor of the Fleet Air Arm.
The first two Merlin navalised and life-extended, to be known as MK4 / HC4, will be ready in September 2017, and it is expected that work on the first helicopter will begin soon after the announcement of the contract, expected this week.
With the last Sea Kings going out of service in 2016 and the last of 25 Merlins HC4 possibly not delivered before 2022, the amphibious force is looking ahead to years of extremely low availability of appropriate support helicopters. This can be considered, by all means, another capability gap in the long list.

The gap will be mitigated somewhat by modifying "several" Merlin HC3 with a folding rotor head (possibly coming from the stored and non-updated Royal Navy HM1 helicopters, so that would mean between 8 and 12 machines). These interim machines will likely be known as HC3I.
The IOC for the helicopters at HC4 standard is expected in early 2018, with 7 such machines available. 

The navalisation will include the folding tail (in 2010, serious consideration was given to keeping a fixed tail boom as a way to save money), folding rotor head, HM2 cockpit, one additional fast rope point, plus modifications to the landing gear and lash down points. An emergency egress system will be optimized on both variants (HC3 and the 6 HC3A ex-danish air force) 


It is also planned to integrate the Merlin HM2 and the Scan Eagle UAV, so that the mission crew on the helicopter can receive data feed from the UAV, and control it, using it as a mobile, long-range eye. This is not at all a new concept, however: it was validated as far back as 2006, with the Sea King MK7 ASaC. The Royal Navy is merely trying again to see if it can obtain what it already tried to get in 2007, when the first embarked UAV urgent requirement was voiced, but ultimately turned down.

The Scan Eagle has finally been procured last year, with two contractor owned and contractor operated systems now in Royal Navy use. One system is embarked already from late last year on RFA Cardigan Bay, in the Persian Gulf, and a second system is starting to operate in these days from the Type 23 frigate HMS Somerset. 

Scan Eagle was validated on HMS Sutherland... nearly seven years ago!
 
Joint Helicopter Command is also rethinking its CASEVAC approach. Currently, the Medical Emergency Response Teams in Afghanistan employ Chinook helicopters, but JHC would like to stop tying down such a precious machine for this role and use, when possible, another platform.

As earlier reported, including on this blog, last year the MOD was also curiously enquiring about light, air-droppable 4x4 vehicles, capable to fit ready to go into a Chinook, for Combat SAR role (and special forces work?). It is unlikely that the MOD will find a way to actually fit such a requirement in the budget, the MOD would like to launch a formal requirement in 2016 as part of the effort to constitute a C-SAR (Joint Personnel Recovery) capability, to fill one of several macro-gaps in capability evidenced by studies on Force 2020.

The end result, in the best case, could be the development of a CASEVAC / Joint Personnel Recovery capability which would see teams of personnel and medical equipment created and assigned to the helicopter most suited to the need at hand. Puma HC2 could be a suitable platform to use in the Land Domain when the size and downwash of a Chinook is excessive (in Afghanistan, when Chinook is unsuitable to reach the casualty, American H-60 platforms intervene instead), while the Merlin HC4, once navalised, would be good to go in the littoral domain.

It is early to say what will come out of these studies and ambitions, but we might see a return, in some ways, to the plans already made in the past decade, which are described in the excellent book “A moment in time.”, by Gordon Angus Mackinlay.



Combat Recovery The (RAF) Regiment provides the Ground Extraction Force (GEF) for RAF Combat Recovery. GEF’s mission is to recover Isolated Personnel (downed aircrew etc-PR Personnel recovery) and high-value assets, in all conditions and threat levels over extended periods, in any operational environment. Combat Recovery requires the small teams to insert primarily by helicopters to locate, authenticate and recover the IP(s) or asset(s). Operating in four man self sufficient teams, behind enemy lines, utilising RAF Regiment tactics and certain items of specialist equipment, until the IP or asset are recovered. The GEF is a part of E Flight, No 28 (AC) Squadron operating Merlin HC Mk3 helicopters at RAF Benson (role may go to No 78 Sqn to support the SF Flight), a further element is with the SFSG. Rescue of shot down aircrew is not just a single helo operation, combat search and rescue will involve a great deal of RAF/AAC resources, for command and control, airborne early warning, strike aircraft support, reserve helicopters, refuelling support.

NOTE : Whilst it was accepted the the UK could not afford a dedicated CSAR force and PR was the intended way, in April 2003 it was intended to have a JPR-Joint Personnel Recovery doctrine. With a Initial Operating Capability (IOC) of three Sea King HC4 on five day 'notice to move' crewed by UK Search and Rescue (SAR) personnel, with three RM Commando GEF teams, and medical personnel from the Tactical Medical Wing. With a intended Full Operating Capability (FOC) for JPR of these plus, a flight of six Merlins (crewed from SAR force), with six RAF Regt GEF teams from No 28 Sqn. Due to operations this FOC has “quietly gone away”, although IOC remains.



Another such macro-gap has been opened in December 2013 with the withdrawal from service, without replacement, of the ALARM anti-radar missile. This kills off the RAF’s specialist SEAD capability. Of course, one of the excuses given is that the UK will actually act as part of a Coalition, which will be able to do SEAD work in place of the RAF.
The problem is that with the RAF quitting this capability area, in the whole NATO there are just three countries left with SEAD capability: the US, obviously, followed by Germany and Italy.
In practice, “coalition” as often happens, actually reads as “we’ll ask the Americans”, since the availability of Italian and german resources is not too trustable. Italy’s SEAD capability was used over Libya in 2011, but Germany did not participate, and the end result was that most of the work was done by the US. 

Radar-chasing no more. Another precious capability lost.
 
Storm Shadow and Tomahawk are of course very good to demolish the fixed elements of an integrated air defence system, but an anti-radar missile remains a key capability to face nimbler, mobile air defence systems, and this certainly constitutes a dangerous gap, and one which brings real limitations. 
It is impossible not to notice, with bitter irony, how the United Kingdom uses the coalition excuse to cuts its own capabilities, and then roars against any call for closer cooperation and integration of capabilities not just in Europe, but even in NATO (the UK, for example, did not join in on the joint maritime patrol aircraft initiative, despite having clear interests in doing otherwise).  In other words: the conspirationists that see the reductions in national capability as a way to go towards unified european armed forces have got it wrong. It is actually worse: capabilities just vanish entirely, substituted by vague and inconsistent comments about working inside coalitions.

On the unmanned aviation front, the British Army hopes to finally get an interim release to service for the Watchkeeper UAV. This document will enable, hopefully within this spring, the army to fly the Watchkeeper in temporarily closed air corridors from Boscombe Down test airfield in Wiltshire to the Salisbury Plain training area, where the aircraft will be able to support army training, staying in the segregated airspace. It is taking a long time to satisfy the MAA authority and obtain the needed certifications, and this has imposed vast delays to the program. It is a process which will last for much longer, we can bet, before the restrictions are all lifted.
The british army at least will be able to move on with the testing of the system: on the to-do list there are exercises to validate the deployment of Watchkeeper task lines via C-17, the air-lifting, under-slung by Chinook, of the containerized elements of the system and operations from semi-prepared runways and tented facilities, in order to prepare for contingency deployments.

The Royal Air Force will keep its 10 Reapers, bringing them into core once Afghanistan operations end. The RAF will work to develop the methods for deploying and employing the Reaper in support to contingency and expeditionary operations. Even as the RAF moves the Reaper to Waddington, it will maintain a presence in Creech air force base, in the USA, to stay in close touch with the USAF and continue to share methods and expertise about Remotely Piloted Aircraft operations.

Finally, the French specialized publication Air at Cosmos reports that France and UK are talking about a possible change to the delivery schedule of the A400M cargo aircraft. France would like to delay some of its purchases to save money in the short term, and is talking with the MOD to see if the UK could and would swap delivery slots, taking more aircraft in a shorter timeframe. There is no firm plan as of now: the UK is not in a better position than France, so finding the money to take over the aircraft earlier than planned might not be easy. The negotiation is however described as serious, and it would also involve tighter cooperation over the type, and a faster build up of the joint activities.
Currently, the UK expects to receive:

3 aircraft in 2014
8 in 2015
6 in 2016
2 in 2017
2 in 2018
1 in 2021

This would complete the planned fleet of 22. The Uk retains an option for 3 more aircraft, which were originally scheduled to be delivered 2 in 2018 and 1 in 2019. The UK could still decide to exercise the options and take up these additional aircraft, but as of now it is unlikely due to budget problems. In the meanwhile, 6 RAF personnel have entered the A400M MEST (Multinational Entry into Service Team), including the first pilot.

 
Storm Shadow test flights finally began

In the meanwhile, the Typhoon has begun to fly carrying Storm Shadow and Taurus missiles, as the integration process begins, and in the US the Block IV software and hardware upgrade, destined to be rolled out for the F-35 around 2020, is starting to take shape. Block IV is important as it is the first point in which the UK, like the other partner countries, will be able to add further national requirements. The hope is that UK and Italy manage to agree and fund a plan for the integration of the Meteor missile in Block IV. Norway will be getting its JSM integrated, and other capabilities will be added to the aircraft, Flightglobal reports.

 


I recommend you follow on Twitter Tony Osborne ‏@Rotorfocus and Gareth Jennings @GarethJennings3 who tweet live from this and other events, always supplying great information 



Monday, May 21, 2012

Replacing ALARM; fighting in hostile skies



The ALARM missile, national solution to the RAF requirement for the Suppression of Enemy Air Defences (SEAD), is arguably by far the most advanced Anti-Radiation Missile (ARM) on the market, able as it is to loiter over an area to strike at enemy radars as soon as they turn on, and has the especially good feature of being relatively small and light, allowing carriage of numerous missiles on a single plane. On a Tornado GR4, ALARM missiles can be carried as self defence weapons, along with other weapon payloads, to help the jet make its way through the enemy defences to its target.

The Tornado can carry a huge amount of ALARM rounds, making for a very capable SEAD asset

With the ALARM missiles under the wings and 12 Brimstones under the fuselage, this Tornado is ready to self-escort itself against enemy air defence networks while it goes tank-hunting. A Meteor-based solution would enable this useful capability to stay with the Typhoon and F35.

Even the Tornado F3, in its last years of service, could employ the ALARM. The Sea Harrier also was capable to employ the missile, which was never cleared, curiously, on the RAF Harriers instead. Once, Typhoon was expected to carry at least 6 ALARMs, from 2013. The plan has been abandoned. 

The ALARM's best feature is that it does not require a dedicate SEAD airplane to be employed, differently from the US HARM, which requires a variety of specialized radar-locating ESM to be fitted to the launching platforms: so, while the RAF can notionally put ALARM missiles on any Tornado GR4 (and, from 2003 to their retirement in 2011, on Tornado F3 as well), air forces using the HARM have to use specialized, purpose-built/kitted airplanes for the SEAD role. This is true for Germany and Italy (Tornado ECR variant) and for the US as well.

The old generation HARM is also quite easily countered by turning down the targeted radar, leaving the missile without guidance. With the ALARM, this is not possible, as the missile can still navigate its way to the target, or anyway go into loitering mode, climbing at high altitude and dangling from a parachute, forcing the enemy to either keep the radar turned off, letting the strike jets pass, or turn on the radar and be destroyed.

The ALARM, however, is approaching the end of its service life. Although unconfirmed, a 2013 out of service date has appeared on some documents, and the requirement for integration of the missile on Typhoon has been dropped.
The HARM is even more out of date, and less and less effective, but the USAF's attempts of producing a replacement in the form of a multi-role missile capable to replace at once the AMRAAM and HARM have so far been unsuccessful, with the latest in a series of development effort being killed off by the 2012 budget cuts at the DoD.

The HARM uses speed as its main instrument for success, being meant to hit the radar quickly after it is located, rushing against it at high supersonic speed, but its inability to pursue radars that are shut down after its launch have limited its combat effectiveness already in the 90s, making it less and less convincing and reliable a solution to the SEAD problem.
Differently from the USAF, which is willing to wait on an HARM replacement in order to develop a super multi-role future missile, the US Navy and USMC have chosen a quicker, simpler path to walk. Since 2003, the US Navy is funding the development and acquisition of an improved HARM, the AGM88E AARGM (Advanced Anti-Radiation Guided Missile) which is meant to counter radar-shutdown techniques and introduce other improvements. The missile is fitted with a passive radar seeker, which locks onto the enemy radar emissions; a GPS navigation system capable to keep in memory the position of the enemy radiation source, and an active, millimeter-wave radar seeker (similar to that used by the Longbow Hellfire and Brimstone missiles) to detect, identify and track the radar and SAM launchers for striking them with accuracy even if the emissions are terminated.

In 2005 the AARGM also gained the funding and participation of the Italian armed forces, which use HARM missiles on the Tornado ECR SEAD airplanes of the 155° Squadron, 50° Wing, based in San Damiano, near Piacenza. The AARGM is thus going to be employed on airplanes such as the Growler, the Prowler and, by Italy, on the Tornado ECR and, possibly in the future, on Typhoon. Germany is a possible future user of the AARGM as well, depending on what they decide to do with their own SEAD squadron on Tornado ECR, or with their Typhoons. Use on the F35B (external carriage) is also a distinct possibility, since the US Marines will not have a replacement for their Prowlers, and won't field any Growler. The F35B is all they are going to have.
The missile could also go on the USAF F16 Wild Weasels (the SEAD specialists) and on F/A-18s and other platforms.
  
The american AGM-88 HARM (A, B, C) and AGM-88E AARGM family is the current american SEAD kinetic effector


Italy's participation in the AARGM followed the failure of an european, German-led initiative for the development of a new generation ARG missile. The program died for lack of funding, unfortunately, but between the late 90s and early 00s, the initiative generated the ARMIGER (Anti-Radiation Missile with Intelligent Guidance and Extended Range). The AARGM was seen as a low cost, low risk alternative, as most of the missile (propulsion, warhead) is just carried through from existing HARM of the AGM88B and C variants already in use.
The ARMIGER was a new missile, faster and with longer range thanks to the adoption of RamJet propulsion (as on the Meteor, to which the ARMIGER bores some resemblance). It was to use a double seeker with a passive radar sensor and an Infrared Imaging one for terminal guidance. It gained the interest of the RAF, of Italy and even of France, but ultimately went nowhere. 


Two images of the abandoned ARMIGER: the resemblance with the Meteor is quite evident. The Meteor however only has two Ram Jet air ducts, on its underside, in order to fit into the Typhoon's under-fuselage recesses. Note the windows of the Imaging Infra Red seeker, coupled to a passive radar receiver. Speed was to be superior to Mach 3 over a range greater than 100 km. Both performances should be even bested by a Meteor-derived solution: the warhead might need changes, though, in order to engage radar antennas and vehicle-mounted SAM systems efficiently.


In 2001, however, the new idea was to take the ARMIGER double seeker, and fit it to the Meteor air to air missile body, creating an ARM with the same size factors of the new air to air missile. This would mean dramatic advantages, opening up many more options for carriage, including the under-fuselage recesses of the Typhoon and the weapon bays of the F35.
Targeting would require a couple of Typhoons flying together and sharing their sensor-generated picture to triangulate the source of enemy radiations. The missile would work like the AARGM, but be totally passive (undetectable to ESM) thanks to its terminal guidance being based on an Infrared seeker instead of a radar one.

The Meteor should finally enter service around 2015, after several delays. France has ordered 200, the UK an undisclosed amount, Sweden and Italy and Germany should also buy several hundred missiles. Export potential is very good and several potential customers are said to have asked MBDA about the missile already. Even the US Navy was, and potentially still is, interested.

Unfortunately, even this approach seems not to have proceeded much further, with no funding being provided in the latest years, even though the US themselves became interested in the effort, in particular the US Navy. Boeing was tasked with studying the feasibility of a ARM Meteor, and studies were completed, apparently with success. Back then, the Meteor was faced with a double, huge opportunity: being selected by the US Navy as a Phoenix long-range AAM replacement, and as new ARM.
However, no one in Europe committed funding for the ARM development, and the craving of the US Navy for a new Phoenix eventually went a bit cold as time moved on, even though it is not entirely vanished even now.

The lack of decision and courage on the multi-role Meteor is a really sad one. The US Navy eventually started the AARGM effort, while continuing to make tests for a new, much faster missile as a long-term replacement.
Then, in 2005, there was another twitch of life for the Meteor ARM, when Italy joined the AARGM effort but, looking at the future, required, as part of the negotiations over the program, to study the feasibility of putting the AARGM seeker onto the Meteor.
Despite the AARGM being 250 mm in diameter, against 180 for the Meteor, the seeker system was small enough to make the migration feasible. As of 2011, this development path was still talked of, and in theory it is an alive concept, but progress is unheard of, since no one is exactly committing to the system, and the only real hope at the moment is represented by the US Navy eventually deciding to aim strongly for the Meteor, perhaps with the ambition of bringing in service also the basic air-to-air variant, as Phoenix replacement and, long term, possibly as AMRAAM successor (NOTE: while the USAF is studying and testing options for long term AMRAAM replacement as seen earlier, the US Navy is not at the moment planning an AMRAAM replacement of its own, counting to use its AIM-120 stocks for many more years).

A game-changing development could be the commitment of the RAF to this relatively low-risk solution. It is possible (albeit of course far from certain) that the decision of the UK to develop the Meteor ARM would be the stimulus needed for partners such as Germany and Italy or even the US Navy to "get on with it", as the requirement definitely exists, but no one seems to want to go at it alone, fearing the costs of such an enterprise.
A Meteor-based ARM would be compatible with internal carriage in the F35's bays, and readily available for use from the 6 Typhoon stations cleared for Meteor. It could represent a huge export win, if the F35 sells a lot (as expected) in the next 30 years, just because it would be the only compatible ARM.
It would not have the loitering mode of the ALARM, but thanks to its radar or IIR terminal guidance it would not need it, as it would be able to see the radar, recognize it, and hit it even if it is turned off.
It would be possibly twice as fast as HARM (Meteor is a Mach 4 missile) and it could well offer a massively increased range (the Meteor is an unique AAM because its RamJet engine burns for the whole length of the attack sequence. AMRAAM's rocket, instead, burns very quickly, accelerating the missile to Mach 4 and then turning off, letting the missile fly forwards only on the accumulated kinetic energy. Having propulsion all the time, the Meteor offers a much greater range, and a much greater "no escape" zone as it can maneuver a lot more without losing speed and kinetic energy, differently from AMRAAM. Attacking a static or semi-static target such as a ground based radar, even truck or tank-mounted, does not require much in terms of maneuvers, and would allow the missile to glide at high speed for many more miles after the engine dies off for lack of fuel, extending the range probably by a huge margin).

It could be possible to develop a multi-role Meteor, with appropriate funding [a missile meeting the USAF specifics of "Triple Target Terminator" by combining active and passive radar seeker allowing it to work as air-to-air missile, Anti-Radiation Missile and ground-attack missile for the destruction of time-sensitive targets] but this might be too ambitious and expensive, at least in the short term.
Developing an ARM variant of the Meteor, to add to the air-to-air one, on the other end, seems a relatively straightforward job, with at least two Seekers up to the job and pretty much ready for adoption.

If there's a weapon program i'd like to see added to the "Complex Weapons" initiative list of to-do, it is the Meteor ARM.



Electronic War: no need to Growl  

It has been noted, rightfully so, that in Europe there's no one at the moment with adequate strategic electronic war capabilities. In Libya last year the only way for NATO to have a wall of electronic disturbs to hide behind was to have US Navy Growlers or Prowlers leading the way to the targets.

Electronic War is important in today's technological battlefield, and it is likely to be even more relevant in tomorrow's one. Accordingly, the US Navy is acquiring a consistent number of Growler airplanes specialized in EW. They are acquiring over one hundred, to form 10 squadrons, each with 5 airplanes, to assign to each of the Aircraft Carrier Air Wings. 4 more "Expeditionary" squadrons add to the force for supporting enduring operations and land operations, helping the USAF fill the hole left by the termination of the B52 standoff jammer system. The 14 squadrons are supported by a 12-airplane Fleet Replacement Squadron training the personnel for service. 


The EA-18G Growler is the latest incarnation of the Hornet family. It is a world-beating Electronic Warfare platform, but it is currently limited by its ALQ-99 EW system, which is aging, eats a lot of power, and takes away a lot of space.


The Growler is a powerful war machine of the modern times. It combines EW and kinetic weaponry on a capable F/A-18 airframe. It goes into battle normally loaded with the pods of the EW system plus a couple of HARM/AARGM missiles for the physical destruction of radars, and a couple of AMRAAM missiles for self defence. It is the replacement for the old Prowlers.    

The USMC has its own 4 Electronic War squadrons, equipped with Prowler, but they have no plan of putting in service any Growler. Their program is to keep the Prowler going in the short term, sustaining their fleet with the airplanes that the US Navy replaces with Growlers, and then provide EW from the F35B and from a drone yet to be selected.
It is expected that the USMC Prowler squadrons will begin to disband, one per year, from 2016 to 2019/2020.
The replacement is intended to be in the form of F35Bs carrying Next Generation Jammer pods. The NGJ is a replacement program for the ALQ-99 EW system used on the Growler, and its integration on the F35 is especially relevant for the USMC.
For the UK, the Next Generation Jammer represents a big chance of expanding its capabilities at relatively low cost and complication. There's no need to have the EA-18 Growler to obtain world-class capacity to blind the enemy sensors and silence their communications, once the development of NGJ and its fielding on JSF are on the way. Unfortunately, there is no date at the moment for F35 integration, but the USMC's need for a Prowler replacement and the unwillingness to renounce to the advantages of a jet fleet on sole F35s should ensure that the program progresses at some point in the next few years.