As the safety inspector for the White Force, Lieutenant Colonel Robinson (Army Reserve), inspects and briefs soldiers STAFF Sergeant Flores and Sergeant Dischristina, in the proper line of safety. Both are from the 31st Air Defense Artillery (ADA) Headquarters and Headquarters Battery (HHB) Battalion, Fort Bliss, Texas, the main Patriot Missile providers for ROVING SANDS '97. ROVING SANDS is a multinational effort and is the largest military exercise on United States soil that allows training in a joint environment to hone command and control procedures and integrate new systems in Theater and Air Missile Defense