Backblast

A Backblast or Back-blast is an effect applied when firing an Anti-Tank Launcher. The rocket leaving the launcher produces a powerful blast from its engine, exiting out the rear side of the launcher.

The Backblast is dangerous to anyone standing behind the launcher, and can potentially be dangerous to the person firing the weapon:
 * People standing a short distance behind the launcher (about a meter or two) may suffer injuries due to the backblast. Even if they do not suffer an actual injury, the backblast (in ArmA 3) causes a powerful screen shake, a loud ringing noise that persists for several seconds, and potentially other effects.
 * The same can happen to the person who is firing the launcher, if there is a solid obstacle immediately behind them - meaning that the blast has nowhere to go, hurting the player themselves. This often occurs when firing the launcher within a small confined space or simply when standing in front of a wall.

To prevent the backblast from injuring anyone, anyone using a launcher will observe the following:


 * 1) Ensure there is nothing solid behind them, and never fire from inside a building if at all possible.
 * 2) Call out "Clear backblast!" a short time before firing, letting others know to avoid standing behind the launcher.
 * 3) Call out "Rocket!" immediately before firing, as a last warning.

Other players will typically keep their distance from any player who is holding their launcher up, ready to fire, regardless of whether they've called anything out. The assumption should be that the launcher may fire at any time without warning.