This page from Marine aviator Pat McAleer's personal flight log records April 1951 flights with VMO-6, the Marine Observation Squadron whose pioneering helicopter operations during the Korean War proved the value of rotary-wing aircraft in combat support roles. The entries, spanning the HTL-4 and HO3S-1 helicopters and the OY-2 Sentinel observation plane, offer a firsthand record of early Marine Corps helicopter aviation during a formative period of its development. Project: 218062