MCAS YUMA, Ariz. -- U.S. Marine Corps K-9 handlers currently assigned to the Military Working Dogs (MWD) Team Deployment Training Course, conduct a training operation on Yuma Proving Grounds, Jan. 10, 2020. The MWD Team Deployment Training Course is a 3-week long course where MWD Handlers from all three Marine Expeditionary Forces advance their dog team capabilities by focusing on teaching teams to become effective and lethal assets.(U.S. Marine Corps photo by Lance Cpl John Hall)