Awareness

Awareness is a perk in Fallout, Fallout 2, Fallout 4 and Fallout Tactics. It is also a skill that was to appear in the canceled Fallout: Brotherhood of Steel 2, skills in this game work like perks do in other Fallout games.

Fallout, Fallout 2, and Fallout Tactics
You can see the HP, equipped weapon, ammunition type and ammunition count of any characters, creatures and robots when you perform an examine.

Fallout: Brotherhood of Steel 2
The player character acquires the strange ability of making creatures temporarily turn away from them, although done so with varying % of success.