Staff Sgt. Derek Scrivener, 11th Security Support Squadron military working dog handler, stands for a photo with MWD Lenox at Joint Base Andrews, Md., Dec. 8, 2016. MWD’s work as force multipliers, using their senses in low-visibility situations to acknowledge things a handler might not see and keeping aircraft safe. (U.S. Air Force photo by Senior Airman Mariah Haddenham)