Power Armor Training (Fallout 3)

Power Armor Training is a Fallout 3 perk. It is necessary in order to operate or wear a suit of Power Armor and a Power Helmet. It can only be gained in two ways, at the Brotherhood of Steel Citadel by Paladin Gunny, access to which is granted at the beginning of the main quest Picking up the Trail, or by finishing the Anchorage quest in the Operation: Anchorage DLC pack.

Obtaining the perk
After gaining permission from Elder Lyons, Paladin Gunny in the Citadel Courtyard can teach you how to use power armor (which starts with him telling you to relax your muscles while wearing Power Armor, but trails off as the screen fades to black). Brotherhood members will say that Gunny is in the bailey, but that is another term for the courtyard. Once you have undergone the training, you may use any kind of Power Armor, including the Enclaves' and the Outcasts' varieties.

If you do not ask for training on your own, you will get it automatically at the end of The American Dream when you become an honorary member of Lyons' Pride.

You automatically gain this perk when you finish the Anchorage Reclamation simulation in the Operation: Anchorage DLC.

It is also possible to gain this perk prematurely via a glitch. This glitch can be done at any time in the game and all you have to do is find the Citadel.

Console command
Through normal gameplay, training is required to wear power armor of any variety. However, the skill can be unlocked via the console in the PC version by typing "player.addperk 00058FDF". The easiest way to acquire the perk early on is to go through the Operation Anchorage simulation directly after leaving Vault 101. The distress call will appear within 3-5 minutes of leaving the vault. In both cases, it allows you to bypass having to speak with Paladin Gunny in the Citadel.