ISO
U.S. Air Force Airman 1st Class Hayden Thomas, 19th MXS aerospace propulsion apprentice, left, and Senior Airman Cory Poff, 19th Maintenance Squadron aerospace propulsion journeyman replace a turbine exhaust casing on a C-130J engine Dec. 29, 2015, at Little Rock Air Force Base, Ark. Maintainers from the 19th MXS work on isochronal platforms with electric power, compressed air and lights that allow a large number of people to work on a C-130 at once. (U.S Air Force photo/Senior Airman Harry Brexel)