Colby was alone in the plane. No Crew. The MACR has him in the "558 FGT SQ" ???
Here are a couple of newspaper stories about him:
https://www.newspapers.com/clip/3150..._boston_globe/
https://www.newspapers.com/clip/3150..._boston_globe/
Some confusion, perhaps in the stories. I think the 550th was doing intruder type mission in Borneo (not Burma??).
https://en.wikipedia.org/wiki/550th_Fighter_Squadron