Master-at-Arms 3rd Class Luke Alvarez and military working dog (MWD) Bak, assigned to Naval Support Activity Bahrain, inspect an unattended bag during an integrated training exercise. MWD's and their handlers are used by naval security forces to defend bases and resources and to assist with enforcing military laws and regulations in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jumar T. Balacy/Released)