Just like the MP40s. This would allow the offensive team to stop the defensive team from spamming the bridge building spot with artillery and preventing them from even getting across the bridge. You could have and artillery gun pop up or a portable radar for the air strikes. Unless these have be made you the field ops couldn’t use those abilities.
I would also like to request that constructions that can be destroyed by satchel charges be able to be destroyed by mortar. This would give the mortar something else to do and add another element to attack defense.