U.S. Army SGT. David Villanueva cleans a UH-60 Black Hawkhelicopter windshield in preparation for a medical readiness exercise in Comayagua, Honduras, Jan. 31, 2006. The 1/228th supports U.S. Army South missions in Central and South America and the Caribbean. Villanueva is a Black Hawk crew chief with the 1ST Battalion, 228th Aviation Regiment in Soto Cano Air Base, Honduras. (U.S. Army photo by Miguel A. Negron) (Released)