U.S. Navy Master-at-Arms 2nd Class Christopher Wickline, assigned to Commander, Navy Region Southwest Police Military Working Dogs unit, examines the paw of a military working dog (MWD) to prepare for explosive scent kit training at Naval Base San Diego, Nov. 19, 2013. The trainers evaluated the MWDs level of detection proficiency in real-life situations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Stacy Atkins Ricks/Released)