How to complete Precipice of War and Rockets' Red Glare without making the Brotherhood of Steel hostile to you. Bottom line to achieve this is to NOT personally kill any named BOS (such as Brandis, Haylen, or Rhys). If you do, the BOS will immediately become hostile. Let your companions take care of them. I also used synth relay grenades to do some of the battling, and the Intimidation perk to pacify some of the BOS, including Rhys, who then fought for me. Be aware that any pacified BOS will need to be taken out to advance the quest (I had hoped to avoid some bloodshed, but alas could not). This video picks up in Old North Church after BOS attacked the Railroad hideout, but does not include the Railroad's version of The Nuclear Option because it has no bearing on Brotherhood hostility toward the player. As a result of this strategy, any BOS you encounter later will not automatically attack you, with the possible exception of having Danse as your companion. FYI - my character is wearing a ballistic weave version of Lorenzo's suit and ballistic weave newsboy cap. Piper is wearing ballistic weave black vest and slacks, and Deacon is wearing ballistic weave baseball uniform. Check out my other videos for some more Fallout stuff.