During the summer/fall of '68 I flew gunner with one or more 34 squadrons at MMAF while assigned to H&MS-16.

For you UH-34 squadron CCs, what was the process for non-squadron personnel to fly in the gunners seat?

I've been trying to find out which squadron(s) I could have possibly flown with, but with no success thus far. HMM-163 and HMM-362 were flying 34s out of MMAF at this time, but there are no AARs for 163, and 362 is a negative.