Hyles was struggling. He was fast - obviously. He had to be to make it as far into the Wonderbolts as he had. But he wasn't Rainbow Dash fast, even when he was Rainbow Dash. His wings were pumping furiously, body straining with effort. She could see the air pressure building up like a wall against him - the wall that separated 'fast' from 'boom'. He wouldn't be able to push through it. She knew that he couldn't. 