they should really put a 3-round burst option into their 30mm
cannon.
That gun is meant to take out tanks (rear), IFVs, military vehicles
and entrenched infantry.... When used in a COIN (COunter
Insurgency) role, don't have to go full auto... Give those guys a
chance. They cannot run hide or run away. Just wound them and then
send in the grunts to take them prisoners.
Also from the video, the guys appears to be unarmed. They could
jolly well be some friends trying to repair a car or at most a few
simple thieves trying to steal a truck. No need to execute them
with 30mm without any trial. Same as the Indian Mutiny where they
tie people in front of a cannon and them blow them to bits.