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Vertibot signal grenades are thrown just as any other grenade in the game, after it lands a plume of red smoke is seen rising from it. If the player doesn't have a friendly Vertibot, a prompt will appear on screen saying "No friendly vertibot can respond."
If they do, the vertibot signal grenade functions as a means to signal for a vertibot to assist in combat.
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- Grafton Steel yard - 10 can be found in a crate located on the vertibot landing pad.
- Converted munitions factory - 10 can be found with a vertibot landing pad, with a Vertibot spawning once the workshop has been claimed and the facility is repaired.
- Wade Airport - 10 will spawn when you have claimed the Workshop, and there is a vertibot landing pad near a crashed Vertibird that can be repaired for 8 steel and 6 aluminium after which a Vertibot can be used.
- Poseidon Energy Plant WV-06 - 10 can be found in a crate located on the vertibot landing pad.
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