U.S. Air Force Staff Sgt. Carmen Pontello, 633rd Security Forces Squadron dog handler, watches his dog Max, 633rd SFS military working dog, after finding his target, at Joint Base Langley-Eustis, Va., Nov. 14, 2017. Before becoming a military working dog, the dogs are tested to see if they have the skill to work in the field. (U.S. Air Force photo by Airman 1st Class Alexandra Singer)