I not sure but think the Air Force was the only branch to use the Koni Omegas. I have used the Koni Omega a few times and really liked the way it handles, I now a Mamiya Univeral, great lens, but the shutter must be cocked, just slower. The Konica Omega backs will also fit the Koni Omega Flex, a twin lens camera, but not a true reflex.
The Navy also used the Rapid Omega. I used them in Photo School at NAS Pensacola and they were also used in the photo lab aboard the USS John F. Kennedy when I was assigned there.