Ground crew perform a radial engine change on a naval aircraft using a wooden A-frame gantry and chain hoists, a common maintenance procedure at training and repair depots during the World War II era. The folded wings of a second aircraft in the background identify the setting as a naval air facility, where carrier-capable fighters and bombers underwent routine overhaul before returning to service. Photographs like this document the essential, often overlooked labor of aviation maintenance crews who kept combat and training squadrons flying. Project: 218303