MASTER Sergeant Rex Breeden, USAF, (right), 51st Security Forces Squadron, coordinates a cordon with other emergency response personnel during a MAJOR ACCIDENT RESPONSE EXERCISE (MARE) at Osan Air Base, Republic of Korea. MSGT LeClair, USAF, (center), stands by with his radio to relay information if necessary. The MARE drills are held quarterly and keep base personnel ready to respond to such emergencies as air crashes, ammunition accidents and fuel spills