Sam Weldon, Federal Emergency Management Agency logistics management specialist, tightens a tire bolt with the assistance of Calvin Rock, FEMA logistics management specialist, at the alert pad at Ellsworth Air Force Base, S.D., Nov. 5, 2015. Weldon and Rock are part of a nine-person team responsible for the upkeep and repair of manufactured homes temporarily stored on base before they are sent to Pine Ridge Indian Reservation. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released)