Military Working Dog Deny and his handler Master-at-Arms Seaman Nicholas Sellers, both of Naval Air Facility Atsugi Naval Security Force, look out the window of an MH-60s Seahawk helicopter during an aerial training exercise for K-9 units. NAF Atsugi’s MWDs are undergoing readiness training for future deployments through accumulation of scents, movement and the feel of riding in, and being around helicopters. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kegan E. Kay/Released)