Austere Challenge 2012 Convoy. Video by Master Sgt. Justin Suddeth | Combat Camera Detachment USEUCOM | Date: 10.23.2012. Soldiers from Alpha Battery, 5th Battalion, 7th Air Defense Artillery Regiment, 10th Army Air and Missile Defense Command convoy from Tzuk, Israel in preparation for DECON exercise while participating in Austere Challenge 2012. Austere Challenge 2012 (AC 12) is a large-scale air defense field training and command post simulation exercise designed to improve interoperability between the U.S. and Israeli militaries. Available in high definition. HD Video.