A Brooklyn girl with autism is safe thanks to a fast-acting neighbor who came to her rescue.

The 7-year-old crawled out of her window and was dancing and singing on top of an air conditioner before she tripped and fell from the ledge.

MTA bus driver Steve St Bernard, 52, was waiting below with his arms outstretched and managed to catch the girl, preventing disaster.

"I just prayed that I'd catch her,' said St Bernard to the New York Daily News. I was right underneath her."

(READ the story w/ photos in the Daily Mail)