Staff Sgt. Bert Mantilla, 30th Security Forces Squadron conservation patrolman, puts a saddle pad on Military Working Horse "Trooper" Feb. 21, 2019, at Vandenberg Air Force Base, Calif. Trooper is a 14 year old American quarter horse who entered active duty in 2010 and helps to patrol 99,600 acres of hard to reach Vandenberg with his patrolman. (U.S. Air Force photo by Airman 1st Class Hanah Abercrombie)
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