When Sonic watched the plane fall, his heart skipped a beat. The constant throbbing stopped for a moment, his pulse still. The heat of running vanished, and a cold dread spread through his body. No matter how fast he ran, he couldn't seem to get to the smoking, fallen plane fast enough.
When he got there, Tails was just barely breathing and his eyes struggled to stay open.
"No," Sonic said as he pulled the small fox into his arms.
This was his fault. Defeating Eggman was his job, and yet Tails had been the one to suffer for it.