In God We Trust
These vintage World War II helicopters were used by the 3rd Air Rescue Squadron in the early days, weeks and months of the Korean War.
From the website Olive Drab:
In the early months of the Korean conflict, following the invasion of South Korea in June 1950, a helicopter detachment of the 3rd Air Rescue Squadron, USAF, had the mission of rescuing United Nations pilots downed over water or behind enemy lines using their WW II vintage H-5 helicopters. 3rd Air Rescue received occasional requests from ground elements to air evacuate casualties from difficult terrain, and when they had time, they responded. By August 1950, they were answering so many calls they found themselves formally in the medical evacuation business.