Erin, 5, reaches out to touch Captain America and Spider-Man when they appear outside her hospital room window high up on the fifth floor of Mattel Children's Hospital UCLA. The costume-clad superhero window washers who included Batman and Wonder Woman descended on their cleaning platforms Wednesday from the hospital roof to the isolation rooms where young patients could see them from their windows. Sunland Window Cleaning, the hospital's window washing vendor, created Superhero Day to bring joy to sick children, many of whom are recovering from organ transplants or have been coping with serious illnesses in the hospital for weeks or months.