Flare (Fallout)

The  is a thrown weapon in Fallout and Fallout 2.

Usage
Flares can come in handy in low-light situations. If you throw one, any targets standing in the vicinity of the flare are treated as if in daylight, making them a lot easier to hit with ranged attacks if darkness is causing a penalty to your accuracy.

Making aimed shots at the eyes at enemies in power armour can blind or even kill them instantaneously, making them a cheap and deadly weapon for 1 AP cost.

Flara