Revealing mistake: When Hawkeye exits the tub, you can see his shorts as he wraps the towel around himself.
Visible crew/equipment: When Klinger's in Colonel Potter's office wearing the fur coat and rubber reducing suit, just as Potter says, "This one is definitely in the running," we can see the shadow of the boom mic shaking up and down on the wall, at the left side of the screen.
Visible crew/equipment: As Klinger sits in the chair dressed in a winter coat, you can see the boom mic and light panel reflected in his shades.
Audio problem: As the Scrounger comes up to Hawkeye and BJ as they walk out after visiting Radar, you hear the horn honk, but the horn button never gets hit.
Answer: It is actually Cencompac for Central Command of the Pacific. It is like the headquarters for all military activity in the Pacific Region (Japan, Korea, Okinawa, etc. The newer version of that is United States Pacific Command (USPACOM).
EMTurbo
And the abbreviations were used mainly by the Navy. Especially CENCOMPAC.
Https://en.wikipedia.org/wiki/United_States_Indo-Pacific_Command.