British photojournalist Larry Burrows covering the war in Vietnam.
Seen here setting up a 1960s-style 'Go-Pro'................a Nikon F with a Nikkor 2.1cm f/4 attached to it.
The chopper the camera is being mounted to is a Sikorsky S-58.
The images below were taken with this setup.
The images would go on to be used in an article published in the April 16, 1965, issue of LIFE called 'One Ride with Yankee Papa 13'.