Yuma Proving Ground shows off its new fire truck. The new vehicle boasts many new features, inlcuding a high-reaching platform that allows firefighters to aim the stream of water by using simple controls.

The mountainous desert ranges of the Yuma Proving Ground have been echoing with the sound of gunshots and explosions the past couple of weeks while one platoon trains for deployment. Produced by Cpl. Daniel Malta/MCAS-Yuma

The newly built General Walker Gate, now the largest access point for vehicles entering the Yuma Proving Ground, replaced one that Col. Thomas Payne, outgoing YPG commander, gave a special name.

Yuma Proving Ground is saying goodbye to Col. Thomas Payne and welcoming Col. Reed Young as the newest commander of the military testing facility.

A film crew was at Yuma Proving Ground to film this new M777 cannon, the world's lightest 155mm howitzer, for a documentary to be aired on PBS called 'Ground War.' Video by James Gilbert and Janet Chasse