Show No Mercy

Show No Mercy is a quest that can be obtained in the Commonwealth in Fallout 4.

Synopsis
With introductions out of the way, the Sole Survivor's dedication to the Brotherhood of Steel must be proved through a trial by fire.

Walkthrough

 * 1) Speaking with Elder Maxson again after having met everyone of note within the Prydwen, the elder will then proceed to prep the Sole Survivor on their next mission, in which it is revealed that the nearby Fort Strong is sitting on an unusually large cache of mini nukes that the BoS will need in their war efforts against the Institute and their monstrosities.
 * 2) After being briefed on the mission, the Sole Survivor will need to return to the flight deck and enter a prepped vertibird, to be transported to the outskirts of Fort Strong, where the Sole Survivor will need to use the vertibird's minigun to take down a group of super mutants, finally cultivating in an encounter with a super mutant behemoth.
 * 3) After taking down the behemoth and entering the ruins of Fort Strong, it is discovered that super mutants have completely taken over the area, and must be routed out in order to gain access to the fort's lower levels.
 * 4) After clearing out the super mutants, and gaining access to the fort's armory and its impressive stores of mini nuke parts (which are seen to need further assembly), speak to Paladin Danse, before returning to the Prydwen via vertibird or fast-travel.

Bugs
If the vertibird cannot be entered, and the quest's objectives refuse to update, try entering the Prydwen and coming back out.