Austere Challenge 2012 Medical Exercise. Video by Master Sgt. Justin Suddeth | Combat Camera Detachment USEUCOM | Date: 10.22.2012. Soldiers from Delta Battery, 5th Battalion, 7th Air Defense Artillery Regiment, 10th Army Air and Missile Defense Command participate in medical drill reacting to a simulated rocket attack on their post in Israel 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. HD Video. High definition.