Since two such question have come up in rapid succession, I'll answer them here, and then leave off:
The CIC is the combat information center, it is the room in which information about the battle is collected, and it is a principle place from which any battle will be directed; on BG it seems to also include the functions of a ships bridge, which is the location from which a ship is driven. This strikes me as very reasonable for a ship in space.
CAG stands for Commander Air Group. While the Colonial the Colonial Fleet TOE (Table of Orginization and Equipment) remains a deep, dark mystery which we might hope to solve here, in Western navies (which BG more than a little resembles) the CAG commands the embarked air wing, and is a peer of (rather than subordinate too) the skipper of the carrier.
[Edited to add: Strega, is there anyway you, or someone else, can fix that "your"? Sorry. Homonyms are my natural predator]
Edited by amitskaw, Jan 26, 2005 @ 5:05 PM.