To call in Fire Support, a Commander player must be standing beside an Observer player. The Commander must equip his binoculars, look through them with RMB, and click LMB to call for that specific Fire Support. The Observer is equipped with a radio which is used to relay back to HQ the Fire Support order made by the Commander.
Fire Support can be selected by the Commander with the Fire Mode Selection key X when binoculars are in hand. Press X to cycle through the options and see the one selected at the bottom left hand corner of the screen. Hold X to bring up a radial menu, then select by mousing over the option you want and letting go.
Each Fire Support option has a finite amount of uses which is represented by a number, and each one has a cooldown. When playing as an Observer, always follow your Commander.
Insurgent Fire Support Options
Explosive mortar shells land in the target area.
Smoke mortar shells land in the target area, creating smoke clouds which provide cover to move.
Repurposed commercial drones fly over a target area and drop grenades.
A repurposed commercial drone flies into an enemy in the target area and detonates itself.
A high volume of explosive rockets land in the target area, killing those inside it.
Chemical mortar shells land in the target area, creating toxic clouds that deal damage to those inside it unless they are wearing Gas Masks.
Security Fire Support Options
Explosive artillery shells land in the target area.
Smoke artillery shells land in the target area, creating smoke clouds which provide cover to move.
A helicopter gunship attacks the target area with a rocket strike, then patrols overhead with an explosive autocannon turret.
A support helicopter flies over the target area and engages enemy with its two side mounted miniguns.
A jet plane strafes the target area in a line firing its explosive autocannon.
Gas Masks can be purchased in the Loadout Menu. When purchased, press B (by default) to equip them. A Gas Mask will protect a player from damage while inside Chemical Mortar clouds (Fire Support).
More of this sort of thing:
- Insurgency: Sandstorm – Commander Tips and Tricks
- Insurgency: Sandstorm – Obscure Stuff
- Insurgency: Sandstorm – Helpful Co-op Knowledge
- Insurgency: Sandstorm – Explanation of Each Class
- Insurgency: Sandstorm – All Classes Weapons, Customizations & Stats
- Insurgency: Sandstorm – Weapons for Beginners