The Tiger's Claw only ever had six squadrons at a time - there was some rotation (one of the squadrons in Pilgrim Stars was completely destroyed during the events of that novel, IIRC).
Squadron size during the war ranged from ten to eighteen fighters.
... I dunno why, i just somehow pictured more then that. The breifing room seemed a lot more packed.
I think you just see eight people stand up when the briefings let out.
True... but then again when the "camera" angle is turned towards the pilots, say when the Colonel is talking about Spirit, you see at least three more rows of people behind her.