Given by the Enclave Remnants at the end of For Auld Lang Syne, or found on the Silver Peak Mine (helmet) and Deathclaw Promontory (armor)
Not really a question since I really have no idea what you are asking. I'm just going to guest with you want to know where to find the armor: Get Arcade as a companion (he's at the Followers of the Apocalypse fort in Freeside). Then you need to get him to open up to you. I did it by talking to Caesar and leaving and telling him that I was getting to know the enemy or something like that. He (should) give you a quest. Complete it and you get the armor.