Goodbye, Farewell, and Amen - S11-E16
Trivia: A real wildfire occurred at the Fox Ranch M*A*S*H outdoor set, located in Malibu Creek State Park, destroying the entire set. The fire was filmed, and the producers and writers decided to incorporate the fire in the reworked script for the series finale.
Goodbye, Farewell, and Amen - S11-E16
Trivia: The M*A*S*H finale "Goodbye, Farewell and Amen" was actually shot earlier in season 11's production schedule. "As Time Goes By" was the final episode shot.
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.