Col. E. John Teichert, left, 11th Wing and Joint Base Andrews commander, bows his head during a memorial service for Military Working Dog Atos at JBA, Md., Jan. 11, 2018. While assigned to the 11th Security Forces Group, Atos provided explosive detection for the Air Force’s largest operational MWD kennel, completing 8,000 search hours, 7,000 vehicle inspections and 100 aircraft sweeps for the president, vice president and distinguished visitors of the United States. (U.S. Air Force photo by Senior Airman Delano Scott)