Watch: "Superhero" window washers delight patients at Johns Hopkins Children's Center

A group of "superhero" window washers sought Friday to put a smile on the faces of patients being treated at Baltimore's Johns Hopkins Children's Center.

The hospital partnered with window washers from Skyclean, Inc., who are dressed up as superheroes as they rappel down the Children's Center building "to create a memorable experience for children who are hospitalized," said a statement from Johns Hopkins Children's Center.  

These hero washers carried out their duties while interacting through the windows with patients.

Past window-washing events at the hospital have featured Spider-Man, Superman, the Flash, Batman, Iron Man and the Hulk putting on a display for the children, while making sure the windows became spotlessly clean.