Mad Bomber

 is a perk in the Fallout: New Vegas add-on, Gun Runners' Arsenal.

Effects
Specialized training is now available for wastelanders with a talent for Repair and a love of Explosives. Crafting tin grenades, fat mines, and even devastating Nuka-grenades are a snap with this handy perk.

Behind the scenes
The perk is a reference to George Metesky, better known as the Mad Bomber, who made and planted bombs around New York City throughout the 50's.