U.S. Air Force Airman 1st Class Heidy M. Murcia-Alvares, a crew chief assigned to the 182nd Aircraft Maintenance Squadron, Illinois Air National Guard, checks fuel gauges during a routine preflight inspection on the C-130H Hercules at the 182nd Airlift Wing in Peoria, Ill., March 13, 2019. Crew chiefs’ duties include extensive preflight and post-flight inspections, intake inspections and all-around maintenance to ensure the aircraft is ready for takeoff. (U.S. Air National Guard photo by Airman Wynndermere Shaw)