Sam Site [PC]
The SAM Site targets any air vehicles (minicopter, scrap helicopter and hot air balloon, even TC authorized players with air vehicles) in range and shoots SAM ammo at the targeted vehicle. They will also target at MLRS rockets, 3 SAM sites are recommended for maximum MLRS protection.
It is recommended to have a RF Transmitter or a Smart Switch paired on your phone to toggle the SAM site if you have air vehicles.
As of February 2022, the SAM site has a Defender Mode that only targets MLRS rockets but not air vehicles. This allows you to still use your minicopters, but never friendly fired by your own SAM sites.