AM et al
MID - Mention in Despatches
BG - Battle Group
HLS - Helicopter Landing Site
RW - Rotary Wing
BSN - Bastion
JAG - (Joint Air Group B%?)
The OP who is currently serving would presumably know these TLAs although I appreciate you old timers :-) may not have known. I also thought that advice ref MAOT rather than an Ops Room was excellent advice and may have been an angle with which the OP may have been unaware.