Rare clouds over Shaw
U.S. Air Force Staff Sgt. Aswad Amen-Ra, 20th Operational Support Squadron weather forecaster, uses a Kestrel to check the wind speed at Shaw Air Force Base, S.C., March 30, 2015. Amen-Ra, new to the weather career field, practiced taking the temperature, barometric pressure and wind speed during the rare mammatus cloud formation. (U.S. Air Force photo by Senior Airman Jensen Stidham/Released)