Michael Muller, 6, looks at window washers dressed as superheroes next to Ashely V., respiratory therapist, at Lucile Packard Children’s Hospital Stanford in Palo Alto, Calif., on Friday, April 3, 2026. (Shae Hammond/Bay Area News Group)

Superhero window washers prepare to be lowered down to wash the building at Lucile Packard Children’s Hospital Stanford in Palo Alto, Calif., on Friday, April 3, 2026. (Shae Hammond/Bay Area News Group)