Dear Sigmund - S5-E7
Visible crew/equipment: As Potter is panning with the binoculars, you can see the lights, camera and crew reflected in the lens.
Dear Sigmund - S5-E7
Visible crew/equipment: As Potter pans around looking with binoculars, the lighting rig and a crew member can be seen reflected in the lenses.
Visible crew/equipment: As Potter turns away from looking at Burns rousting a man, he walks past the camera talking to himself. As he gets close to the camera, the shadow of the boom mic plays on his left sleeve.
Visible crew/equipment: As Potter and Hawkeye look at the totalled and burning jeep, the shadow of the camera's shade can be seen at the lower left corner of the shot.
Visible crew/equipment: As Margaret gets into the chopper, the lighting rigs, camera and crew are reflected in the canopy.
The General's Practitioner - S5-E20
Visible crew/equipment: When the Colonel that Hawkeye referred to as "Bozo" is talking to General Korso on the way to the 4077th to get Hawkeye, you can see the shadow of the camera on the Colonel's lap.
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.