From left, U.S. Air Force Lt. Col. Alisha Smith, 633rd Medical Support Squadron commander, and Maj. Scott Black, 633rd MDSS nutritional medicine flight commander, compete in the National Police Week Defenders’ Challenge at Joint Base Langley-Eustis, Virginia, May 16, 2018. During the week, a Military Working Dog demonstration and other events took place to honor the men and women who have served in the line of duty. (U.S. Air Force photo by Staff Sgt. Areca T. Bell)