Airman 1st Class Kristine Glenn, 51st Security Forces member, checks her sector of fire after responding to a possible bomb threat during an Emergency Management Exercise, at Osan Air Base, Republic of Korea, March 3, 2012. During the exercise members of the 51st SFS maintained control over the cordons while ensuring that all unauthorized personnel were detained and escorted out of their area of responsibility. (U.S. Air Force photo/Senior Airman Adam Grant)