Upon exiting the fort, a short scene plays where the Sole Survivor witnesses the Brotherhood of Steel arrive in the Commonwealth in full force, having traveled from the Capital Wasteland on board the Prydwen, which acts as their mobile base. Several Vertibirds will escort the Prydwen as it travels across the Commonwealth. The Brotherhood will announce their arrival via a loudspeaker and state that they are coming with peaceful intentions. This starts the quest Reveille if you've not dealt with the Brotherhood before, or Shadow of Steel if you have completed the Act 1 quest arc for the Brotherhood.

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