A swift fox sits in a cage on the flightline at Ellsworth Air Force Base, S.D., Feb. 23, 2016. Swift foxes are on a threatened species list and, when found, are released into the wild on base to help keep the base rodent and bird population low. To report a pest problem, call the 28th Civil Engineer Squadron pest management office at (605) 385-2521. (U.S. Air Force courtesy photo by Airman 1st Class Melissa Waszkiewicz/Released)