Shadow of Steel

Shadow of Steel is a quest in Fallout 4.

Detailed walkthrough
After observing a huge Brotherhood of Steel airship pass overhead, the player character's Pip-Boy radio receives a transmission. Listen to it for further instructions before heading to the Cambridge Police Station and following Paladin Danse to the roof.

At the Brotherhood of Steel's flagship, The Prydwen, disembark onto the flight deck and meet Lancer-Captain Kells.

One is ordered to attend an address being given by Elder Maxson. Speak to Maxson afterwards. Regardless of the earlier rank in the Brotherhood, Maxson now bestows the title of 'Knight' to the Sole Survivor and a shiny new suit of power armor which can be found in Bay 3 of the main deck.

Bugs

 * If you did not complete Call to Arms before The Prydwen appears after Reunions, this will trigger a glitch where Brotherhood Vertibird patrol teams will not spawn correctly.
 * If an NPC clips through Paladin Danse while you are reporting to him, the dialogue options may disappear and cannot be pulled back up. When you try to talk to him again, he will only say "I'll be in the mess hall if you need me. Good luck with Maxson" making the quest impossible to complete, and will leave you unable to talk to most of the other Brotherhood of Steel members.