In less than 80 days, the improved protective turret prototype on this Humvee was taken from sketched concept to hard-core assembly. The igloo-shaped structure is designed to wrap around and over the turret gunner, thereby minimizing the sniper threat. The protective prototype's development and testing stemmed from the death of Airman 1st Class Leebernard Chavis, who was killed by sniper fire in October 2006. (U.S. Air Force photo)