Major Knight is stationed at the Mojave Outpost. His main role is to repair the troopers and travelers' weapons and armor in exchange for caps. His Repair skill is at 100 percent and, as such, he will repair equipment to maximum condition, though this can be expensive.
My Kind of Town: Major Knight can be convinced to send some much needed aid to Primm. Alternatively, he can be convinced to give Meyers a pardon so he can become Primm's new sheriff if chosen by the Courier.
The Confirmed Bachelor perk will also grant unique dialogue options with Knight, in which the Courier can come on to him, although he begrudgingly denies the advances. He also says that the soldiers in the Mojave Outpost seem to frown upon same-sex relationships ("friendships" as Knight refers to it.)