The Army is pursuing an interim effort to outfit its combat vehicles with active protection systems from three companies, but the re-entry of a prime contractor that had exited the market has the potential to shake up the program. Raytheon, manufacturer of the Quick Kill APS that had been slated for inclusion on the Army's ill-fated Future Combat Systems and Ground Combat Vehicle platforms, is reviving its long-dormant effort in anticipation of an eventual competition for the full fleet of...