For years, American tank crews could only gnash their teeth while their Israeli and Russian counterparts enjoyed active-protection systems to stop rockets from destroying their vehicles.
Envy turned to hope in 2016, when the U.S. Army finally decided to begin testing APS defenses for its armored vehicles. Then earlier this month, the Army announced that it would fit 261 M-1 Abrams tanks—enough for three brigade combat teams—with Israel’s Trophy APS system.
But will these antirocket defenses really work? A Pentagon inspector’s report last month suggests that, because of problems with testing, the Army can’t even be sure of APS’s effectiveness.