Fire Support

Fire Support is a quest that can be obtained within the Commonwealth, in Fallout 4..

Synopsis
As the Sole Survivor travels through the ruins of the Commonwealth, many distress frequencies are heard taking up the Boston airspace, with one in particular, being military-esque in origin. This particular military group have come under attack by a roving pack of feral ghouls, and it will be up to the Sole Survivor as to whether or not they can beat back the horde.

Walkthrough

 * 1) Within the vicinity of the Cambridge police department, the Sole Survivor will pick up a military radio transmission from a group of Brotherhood of Steel recon team survivors, who are holed up at the police department, and are under attack by unknown assailants
 * 2) Upon arrival at the police department, the assailants are seen to be an unusually large pack of feral ghouls, all of which must be dealt with before they overrun the BoS's position.
 * 3) After dealing with the ferals, the Sole Survivor will gain the option to speak with the BoS's soldier in command, Paladin Danse, who will then recruit the Sole Survivor into their ranks (at this point, as a mere initiate).