TIC = Troops in Contact
Blufor = yes, friendlies
Opfor = yes, opposing forces, baddies
DC = Danger Close, doesn't refer to enemies close, it refers to dropping indirect fire (artillery etc) very close to your own troops such that they might be at risk. For example, you might initially fire further then move the actual impacts slowly closer rather than risk a drop short hitting your side.
Call for fire = yes, often starts with how many tubes you want to fire, such as "Fire Mission Battery" = 6 guns, Fire Mission 3 batteries = 18 etc. CFF can be explosive (impact, delay or air fusing), smoke or illumination. Also pattern - stretched out along road or clumped at a bridge/chokepoint etc.
CFF naval = yes, used in Falklands etc
FAC in old speak, JTAC these days.