TULSA, OK (CBS/KOTV) - Check this out! Three super heroes, high in the sky, washing windows in Tulsa!

Batman, Spider-man, and The Hulk were caught cleaning windows at Saint Francis Children's Hospital Monday. Turns out this is what they do when they're not fighting crime, or catching bad guys.

As you can see everyone was taking pictures, and laughing, but the guys say the best part was seeing the kids' reactions inside the building when they would pop up on each floor.

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