Apparently, if you stand on the desk in some of the buildings as FT, your head and gun sticks out of the building and you can shoot the predator outside from relative safety.
Its hard to get proof out of this since I cant take screenshots… Have to take a picture of my monitor with my phone, but here I’ve marked with an arrow the rifle of this guy sticking out of the building. It was overgrowth (the aztec temple map).
This doesnt seem like terribly beneficial exploit (the fire team in above match ended up just sitting there the entire match and letting time run out), but I thought that this is somewhat unintended behaviour… Suggested solution: Make sure that nobody has room to climb on the desks…