Staff Sgt. Monica Bizallion, 11th Security Forces Support Squadron military working dog handler, bonds with her military working dog, Nirvana, after training at the MWD obstacle course at Joint Base Andrews, Md., Mar. 12, 2015. Team Andrews utilizes more than 30 MWDs to help protect the base, residents and flight line. (U.S. Air Force photo/Airman 1st Class Joshua R. M. Dewberry)