George watched for a moment as Fred's spell drew the attention of the Death Eater who'd flung the curse in his direction. As the masked git turned away, George set to work creating a bigger distraction so that Fred would have time to get the Muggles to a safe spot.
He grasped one of the ropes that was holding several of the barrels together, quickly making a slashing motion with his wand. "Diffindo," he muttered, watching as the rope was sliced in two. He repeated the process with several of the other ropes and then watched as the barrels cascaded along the dock, rolling towards the Death Eaters and knocking several of them off their feet.
He was about to run forward to help Fred with the Muggles when he heard an impossibly loud explosion on his right side a split second before he was knocked off his feet. Waves of heat rushed over him and from his prone position on the dock, he lifted up his head to see that a cargo freighter was now alight. Apparently, the Death Eaters had felt that attacking the other ship wasn't enough of a statement and had moved on to a new target. Plumes of thick, black smoke rose into the sky and George pushed himself to his feet, charging down the dock closer to the freighter, trying to see if there were anyone on board. Sure enough, he could see Muggle sailors racing about on deck.