A San Francisco Police Officer with a Batkid sign on his bike waits for the arrival of Miles Scott, dressed as Batkid, in San Francisco, Friday, Nov. 15, 2013. San Francisco turned into Gotham City on Friday, as city officials helped fulfill Scott's wish to be "Batkid." Scott, a leukemia patient from Tulelake in far Northern California, was called into service on Friday morning by San Francisco Police Chief Greg Suhr to help fight crime, The Greater Bay Area Make-A-Wish Foundation says. (AP Photo/Jeff Chiu)

Photo by: Jeff Chiu

A San Francisco Police Officer with a Batkid sign on his bike waits for the arrival of Miles Scott, dressed as Batkid, in San Francisco, Friday, Nov. 15, 2013. San Francisco turned into Gotham City on Friday, as city officials helped fulfill Scott's wish to be "Batkid." Scott, a leukemia patient from Tulelake in far Northern California, was called into service on Friday morning by San Francisco Police Chief Greg Suhr to help fight crime, The Greater Bay Area Make-A-Wish Foundation says. (AP Photo/Jeff Chiu)