Vertibird signal grenade

The vertibird signal grenade is a weapon in Fallout 4.

Characteristics
Soon after throwing a vertibird signal grenade, a vertibird will appear on the horizon and track towards the player and land in the vicinity of the marked location. The player can then board the aircraft to take control of its side-mounted minigun. Opening the Pip-Boy map and selecting a location to fast travel to will cause the vertibird to lift off and start flying to the selected location. When the vertibird has landed the player may exit or use the Pip-Boy map to select a different destination. Alternatively the player can change the destination mid flight. The vertibird signal grenade can only be used outside, and only by members of the Brotherhood of Steel, the Minutemen, or the Railroad upon completion of the former's main questline. The grenade produces orange smoke.

Variants

 * The Minutemen have two similar support items, flares and smoke grenades. The flare will signal for troops and the smoke grenades direct a strike from nearby artillery.
 * The Institute have synth relay grenades to spawn synths.

Locations
First given by Elder Maxson as a reward for the quest Show No Mercy. More can be bought from Proctor Teagan aboard the Prydwen or from Tinker Tom at the Railroad HQ after finishing the main questline for the Railroad. Another way to obtain this is by completing the Minutemen questline, and upon destroying the Prydwen the player will be given the grenade by Preston Garvey.

Gallery
Fo4vgsback.png |CAUTION: Handle all incendiary devices with extreme care. High heat can cause risk of burn or blindness. Fo4vertibirdsupport.png |A vertibird that has been called in and landed 