Warnings of attack

[Subal]

Was wondering if it be possible to add alarms of some sort in the bunker of veritas so that when people enter the place attacking, maby a character in there will give the warning "The mountain is under attack" ?

I spend alot of time rping inside the bunker, and i think it be cool, and reasonable for a npc to alert those who are in the bunker when the place needs defending.