(From left to right) DoD Officer Yvette Perez, Tech Sgt. Rochanapan Silpe, 2nd Lt. Alea Nadeem and Officer Steven Haymes respond to an emergency call to secure a building where an armed suspect is holed up during the military operations in urban terrain (MOUT) training April 22. They are part of the 61st Security Forces Squadron team competing in this year's Guardian Challenge May 16 through 19 at the Air Force Space Command in Colorado Springs, Colo. (Photo by Joe Juarez)