Army’s Infantry Squad Vehicle undergoes tests at Arizona’s Yuma Proving Ground The Associated Press February 28 A new vehicle that the U.S. Army is acquiring to provide infantry soldiers with battlefield mobility is seen in the Yuma Proving Ground's harsh desert terrain in southwestern Arizona on Feb. 17, 2021. (James Gilbert/The Yuma Sun via AP) YUMA, Ariz. — A new vehicle that the U.S. Army is acquiring to provide infantry soldiers with battlefield mobility is being tested in the Yuma Proving Ground’s harsh desert terrain in southwestern Arizona. Testing began in early February with a goal of finishing by April, said Isaac Rodriguez, team leader for the proving ground’s combat automotive division.