Yuma Proving Ground (YPG) is a United States Army series of environmentally specific test centers with its Yuma Test Center (YTC) being one of the largest military installations in the world. It is subordinate to the U.S. Army Test and Evaluation Command.
YTC's Ground Combat Systems test-fires a M109A6 self-propelled howitzer at a YTC artillery range.
A Royal Danish Army Piranha V infantry fighting vehicle conducts testing at YTC's water fording pit.
A M1126 infantry carrier vehicle conducting desert mobility testing at YTC
An M1 main battle tank climbs a 60° incline, part of performance testing at YTC.
United States Army Test and Evaluation Command
The U.S. Army Test and Evaluation Command, or ATEC, is a direct reporting unit of the United States Army responsible for developmental testing, independent operational testing, independent evaluations, assessments, and experiments of Army equipment.
A U.S. Air Force C-17 delivers a U.S. Marine Corps LAV-25A2 at 1,500 ft (457 m) over Fort Bragg...
and airdropped onto Sicily Drop Zone...
where U.S. Army paratroopers prepare the LAV and its weapons for action...
then test-fire its weapons as part of OTC's airdrop certification.