The Active Protection System (APS) is designed to intercept RPGs, ATGMs, and long rod penetrators, to protect the smaller and lighter manned vehicles of the Future Combat System (FCS), and it now seems that it simply does not work, according to the latest GAO report.
The interesting thing is that the Israelis have a system that does work, Trophy, though it is less ambitious than the APS, but it was rejected and hundreds of millions of dollars directed towards Raytheon.†
One of the interesting bits about FCS is that is as much an industrial base preservation system as anything else, with bizarre separations of work to ensure that various contractors get sufficient workshare.
I believe that the high technology band tracks are the responsibility of the BAE Systems†, and the suspension is the responsibility of General Dynamics, for example, which makes no sense whatsoever.
*Full Disclosure, I worked for Raytheon a number of times, both in Texas and in Maryland over the past 15 years or so.
†Full disclosure, I worked on the Future Recovery and Maintenance Vehicle, FRMV, “wrecker” variant of the FCS-MGV from 2003-2006 at United Defense (later BAE Systems after the Carlyle Group sold me to buy Dunkin Donuts).‡
‡Yes, I have worked everywhere. Maybe I can’t hold down a job, but more likely this has been my role as “technical hit man”, where you are parachuted in to take care of a specific need.