Hoover Dam - Quartermaster Bardon often sells sets.There is also a set in the elder's private quarters. If one breaks into the armory, four suits of armor and three helmets can be stolen. Hidden Valley bunker - Knight Torres may sell depending on her merchant inventory.Great Khan armory, Red Rock Canyon - Full suits of armor in poor condition sold by the Great Khan armorer.Brotherhood of Steel safehouse - A complete suit in poor condition can be found on a shelf.
This DT is lower than that of T-51b power armor and Remnants power armor, but still provides protection equal or superior to all non-powered armor in the game. T-45d power armor provides a Damage Threshold of 22 as well as a bonus of 10% to Radiation Resistance, +2 to Strength and a -2 penalty to Agility.