it kinda sounds like a useless piece of equipment for the most part unless your teammates are willing to help out. i liked how the laser in modern combat worked. u aimed it at whatever vehicle and a missile came in on its own and destroyed the vehicle.
It laser designates a target for a jet or chopper that's carrying Air to Ground missiles, shows up as a big orange square on their screen. I don't think they help with locking on because the few times someone lasered a target for me I still had to lock on
to the target manually.