That's one way of calling it in.

Also, is the spotter also the radioman for a sniper team?

They're a joint TACP. The Army sniper is taking advantage of her scope's night vision capability to observe the target while the Air Force JTAC on her right relays information to the AC-130 gunship.

Teamwork :)

And that is why they call the AC-130 spooky because, you don't know it is there until your tanks blows sky high