The enemy saw him prepping the gun, and, with their weapons needing reloading, they managed to find cover, remarkably quickly, leaving him free of fire, for the moment, though there's still the fact that, now they're in cover, and scattered, and more are moving in from other directions, to flank him in a short time.<br/><br/>The gate was half closed, but his fire stops that action quickly enough, and the engine starts quickly, albeit with a loud roar. Definitely not a stealth vehicle.