Silent Running (Fallout 3)

Silent Running is a perk in Fallout 3.

Effects
This perk drastically increases the ability to crouch-run through buildings to achieve Sneak Attack Criticals. Together with the Chinese stealth armor, the player character is virtually invisible to non-player characters, even when using the Pip-Boy 3000's light.

Behind the scenes
The perk is a reference to the 1972 film Silent Running, which was set against a post-apocalyptic sci-fi backdrop.