8/17/2006 - Tech. Sgt. Brian Johnson fires at targets during the Guardian Challenge marksmanship competition at the U.S. Air Force Academy, Colo., on Aug. 15. Sergeant Johnson is the 50th Security Forces Squadron team leader at Schriever Air Force Base, Colo. (U.S. Air Force photo/Senior Airman Jason Ridder)

8/17/2006 - Airmen from the 50th Security Forces Squadron celebrate Airman 1st Class Devin Stapelman's finish at the Guardian Challenge tactics competition at the U.S. Air Force Academy, Colo., on Aug. 14. Airman Stapelman is the youngest competitor from the 50th Space Wing at Schriever Air Force Base, Colo. (U.S. Air Force photo/Senior Airman Jason Ridder)