M03: Smokestack is the third mission in Metroid Prime: Federation Force. It is the first to occur on Talvania, and the objective is to discover why an abandoned power station has come back online, then shut it down. Enemies in this mission include Security Bots, Eyeflyers, Sentry Missiles and Grim-Class Turrets. Destroying 14 Security Bots is a bonus objective. A Shield Door blocks ingress into the station and can only be opened with a Missile Key, which can be found nearby.