Weasels work night shift

SHAW AIR FORCE BASE, S.C. -- U.S. Air Force Senior Airman Edward O. Santana-Acosta, 20th Aircraft Maintenance Squadron tactical aircraft maintainer, puts on hearing protection before marshalling an F-16CM Fighting Falcon at Shaw Air Force Base, S.C., April 13, 2017. Maintainers are required to use personal protective gear and follow technical orders to ensure optimal safety for everyone on the flightline. (U.S. Air Force photo by Airman 1st Class Destinee Sweeney)