Sokka watched in horror as fire bloomed all around them – an inferno so bright and hot that even Toph seemed to notice it.
But up ahead, even among the clouds of flame, one concentrated jet of flame stood out, targeting the Firelord's airship, unerring. And upon impact, that airship quite literally crashed and burned.
Zuko was an amazing firebender. But there was only one person who could do what Sokka had seen – only one person whose style Sokka knew inside and out – and that person had returned to do what had to be done.
"It's Aang!" he cried. "He's back!"