U.S. Air Force Staff Sgt. Paul Rosales, 55th Security Forces Squadron combat arms training and maintenance instructor, fires at a target during Air Combat Command’s Defender Challenge team selection at Joint Base Langley-Eustis, Virginia, August 20, 2018. The team candidates fired the M4 carbine and M9 pistol during the selection. (U.S. Air Force photo by Airman 1st Class Anthony Nin Leclerec)