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Edited by Noah Shachtman | Contact

So Much for "Force Fields"

A few weeks back, buzz was building, fast, for Trophy, an Israeli "active protection" system that stops rocket-propelled grenades in mid-air. At the Naval Surface Warfare Center, demonstrations of the vehicle-mounted defender a went well, with the Trophy's four radars picking out out RPG threats, and firing a kind of buckshot at the incoming shells. In Israel and here in the States, test vehicles were getting equipped. Fox News got so fired up, it declared Trophy to be a "top secret... futuristic force field." Which lead some commenters on the lunatic fringe to cheer for the new "barrier of invisible energy fragments (perhaps light particles charged by lasers)."

trophy-seequence2.jpgBut all the heavy-breathing didn't help the system, in the end. "The Army is passing up [on Trophy] ... to pursue an alternative system that won’t be fielded until 2010 or later," Defense News ace Greg Grant reports.

The Army won't say why, exactly -- only that "the issue with any [active] armor protection system is the 60 percent solution is not acceptable," says Maj. Gen. Roger Nadeau. But here's a guess: What happens when Trophy confuses a kid with a rock and an RPG-carrying insurgent? How does that look on Al-Jazeera?

The free-thinkers at the Pentagon's Office of Force Transformation -- the folks who sponsored the Trophy trials, and who are planting the system on their experimental Project Sheriff vehicles -- have an alternate theory, however. The Army, in their view, is worried that Project Sherriff and Trophy might compete with its massive vehicle modernization program, Future Combat Systems.

The Army knew about Trophy — some 60 officers and FCS officials visited Israel for briefings, but not a single one asked for more information on the system. The OFT stumbled onto the system last summer and immediately moved to negotiate a government-to-government technology agreement allowing American officers unprecedented access to all the top-secret data on the system...

In fact, Army acquisition officials are lobbying [higher-up Pentagon] officials to allow the service to remove the active protection system and the millimeter-wave “active denial” [pain ray] systems that are at the heart of the [Project Sherriff] vehicle.

"Instead, the Army wants to field a Sheriff that eschews the active armor system for slat armor," Grant notes. And that's a big problem. Because insurgents in Iraq have started using a new, powerful RPG that shreds the cage-like defense.

The RPG-29... packs two shaped-charge warheads: a small one to blow up the reactive armor or blow through the slats, clearing a path for a larger charge to strike the vehicle’s hull. [The weapon] poses such a threat to American armor that the U.S. military has refused to allow the newly formed Iraqi Army to buy them, fearing they will fall into the wrong hands, the top Iraqi ground-forces general told The New York Times last August.

There is only one currently available active armor system designed to defeat RPGs: Israel’s Trophy system, according to OFT officials.

UPDATE 12:55 PM: Last week's Inside Defense had more on the Army's active protection reservations. "It is not just about giving [soldiers] an APS system. How do the soldiers work with it? How does it tie into the network? How do you know when to turn it on? When not to turn it on?" said Future Combat Systems program manager Brig. Gen. Charles Cartwright. "We could put something over there . . . overnight but have I got the logistics to be able to support," the technology.

In recent months, service officials -- not directly involved in the development of APS technologies -- have warned against waiting for a 100 percent solution. During a March 28 Institute for Defense and Government Advancement defense acquisition symposium, Edward Bair -- the Army’s program executive officer for intelligence, electronic warfare and sensors -- spoke in detail about how acquisition reform could better support the warfighter. Included in Bair’s presentation was the term "Good Enuf," at which time he explained that good enough today is better than optimum five years from now.

UPDATE 1:09 PM: Alabama National Guard LT and missile defense engineer Jimmy Wu says some of the Army's hesitancy is legit. But only some.

The cloud of projectiles from the active protection system is bound to hit people in addition to its target RPG. In addition, in an urban fight, the RPG gunners will try to get inside the minimum range of a Trophy system such that it does not have the time to shoot down the RPG.

On the other hand, there are situations where the Trophy is useful. For example, during the approach march [eg, highway convoys], where everyone is under armor, the Trophy will minimize losses from an RPG ambush.

Both sides have merit. However, if I was deciding, I would deploy the Trophy. By adding an off switch, the Trophy operator can turn off the system when there are many people outside the vehicle. Training is not a big factor because the small fleet deployed is too small to cause future training problems. Supply should not be an issue either because of the small fleet. We need to encourage experimentation on the battlefield instead of quashing initiatives like the Sheriff.

Latest Comments

I got this one from bugs bunny. Stick a rock in the back of the missle-launcher before they fire. As elmer fudd put it "that damn raskally rabbit!"

But seriously if the countercharge works then as porky pig says " dadadadadadad da dats all folks!"

The countercharge is an effective inexpensive means tot he flares. Yes, they proved a good point that the reloadable rocketeers may fire more than one charge and we may not have more than one onboard , this is a good point.

But, if we fly above 1000-1500 feet the handheld rockets are obsolete. However if the countercharge is fired and effective in the 1000-1500 feet then the pilot will need to raise up above ground surface area and abort if all countercharge drones are fired effective or ineffective in it's target acquired.

Posted by: max anderson at February 25, 2007 9:53 PM


A little searching reveals two major flaws in Trophy. First it is not an all aspect system. How long do you thing an insurgent will take to figure out the "sweet spot"? Second it is not an auto-reloading device. How long do you think an insurgent will take to figure out how many shots are in the magazine? Its fine to debate whether to deploy a partially effective system, but whats gone on on this web discussion so far has illuminated nothing.

Posted by: pdp at January 9, 2007 9:34 PM


To "pedestrian"- who was worried about TROPHY's weight- well, TROPHY weights about third of the SLAT armor, and about 20% of reactive armor. It does not affect in any way the vehicle's mobility.

Posted by: Carmel at May 12, 2006 6:10 AM


Well, I don't think the argument on "hitting the rock-throwing kid" is valid at all. You can't tell me that a radar system is going to confuse a 300mph projectile with a 60pmh one. Second, if the buckshot hits some people in the background, that's friggin' war. It's not the people in the vehicle's fault that their enemy decided to fire an RPG in the middle of a crowd, it's the enemy's fault for not giving a flying f#ck who they hit, as long as people die. The propagandists are going to call whatever happens an intentional killing of civilians by the vehicle that was targeted anyway - screw them, we have to have our own "truth-machine" in place to counteract that.

So, if you don't deploy an APS like Trophy, and the vehicle gets blown up, and the troops in the vehicles ahead and behind the blown-up one open fire on every dark window, alleyway and rooftop they see a shape in, and kill 5 people in the crossfire, is that a better solution? Use the 60% solution that protects OUR vehicle even if it has a small chance of hitting civilians in the background, until a better one is developed, in 2010 or whatever.

It's the enemy that is choosing to fire that rocket... we shouldn't be concerned with when and where we are allowed to defend ourselves when the enemy attacks. Plus, the Trophy does fire a very concentrated and well-aimed shot, so it's not going to take out a whole slew of people. If you give it an off-switch for very dense crowds, then it's even better. Then also, not every RPG ambush hits on the first rocket, so the minute the first one went by the troops could flip the switch and dog the hatches (again, that's better than having nothing! and the shrapnel from a hit is going to hit innocent people anyway).

As far as the comments on the '16/M4, I don't think you need full-auto assault rifles much anymore. Really, you can get practically the same fire downrange with successive 3-rd burst shots, but they will be more accurate and actually spread your ammo usage out over about 1 second longer (meaning the enemy keeps their heads down 1 sec longer). The only time full auto is really handy is in bounding-overwatch or suppression, and you got the M-240 and M-249 for that (and the .50s on the vehicles).

The AK is incredibly hard to be as accurate as the M-16 with in rapid-fire situations, and while it can take nearly any environmental conditions and keep going, if troops keep their weapons clean, the improvements in the '16 over the years make it almost as reliable, and much more accurate. The days of massive fire downrange in hopes of hitting something, like in WWII or Vietnam, are practically over, what with helicopters, UCAVs, portable scout drones, and your squad's SAWs.

Keep the selector on 3-rd Burst with the '16 and you got close to the same rounds per second as full-auto, but you are MUCH more accurate as you get that brief (.25 sec) between bursts to require your sight picture. If you are talking <10m engagements, use a damn Benelli M4 Super 90(M-1014 Combat Shotgun) - I'd deal with the weight to carry one on my back if I was going house-to-house, no doubt. Anyway, my two, er, bucks.

Posted by: Moose at May 8, 2006 1:24 PM


all this talk about the trophy system hurting nearby troops or civlians is rubbish.

A: the system uses a highly focused shot to dissable the rpg.

B: even if the "buck-shot" did hit some nearby friendlys it would still cause much less damage than if the rpg went off when it hit the vehicle. THink about it, if there wasnt any trophy like system on the vehicle and it got hit by an rpg the explosion and shrapnel would still kill all the nearby people. So that eliminates the argument that you would put dissmounted troops at a greater risk.

As for the concerns about weight, i don't think anyone here can accuratley guage that since no detailed specs or layouts of the system have been released.

Posted by: Andrew Johansen at April 30, 2006 10:02 PM


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