From an aerial perspective, Bubble Boy gets to see the guards moving towards the front to fight off the 'impending attack.' Also, the policlub terrorists wouldn't succeed at their ramming, even if the group's ride wasn't in the way. Security measures are already springing to life, set up to stop and perforate anyone in a ride big and bulky enough to pass as a supply truck.<br/><br/>The drone can even see the presumptive attackers, but not the movements of the hit team that's going to cut their heads off mid-retreat.