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Daniel Fry holds up his daughter Kayla, 5, as they wait for 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) ( Boys Batman Wish )

Miles Scott, dressed as Batkid, second from left, exits the Batmobile with Batman to save a damsel in distress 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) ( Boys Batman Wish )

This undated image released by Make-A-Wish Greater Bay Area, shows five-year-old Miles Scott dressed as batman. With the help of the Make-A-Wish Foundation and the city of San Francisco, 5-year-old Miles Scott, aka Batkid, will rescue a woman from cable car tracks and capture the evil Riddler as he robs a downtown bank. Miles, who lives in Tulelake in far Northern California, was diagnosed with leukemia when he was 18 months old, ended treatments in June and is in remission. (AP Photo/Make-A-Wish Greater Bay Area) ( Boy's Batman Wish )

Crowds gather in front of a former bank vault waiting for 5-year-old leukemia survivor Miles, also known as BatKid November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111594 )

5-year-old leukemia survivor Miles, also known as BatKid gives a thumbs up as he exits his cave at Union Square November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111597 )

Police escorts 5-year-old leukemia survivor Miles, also known as BatKid as he exits his cave at Union Square November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111598 )

Police escorts 5-year-old leukemia survivor Miles, also known as BatKid as he exits his cave at Union Square November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111599 )

5-year-old leukemia survivor Miles, also known as BatKid exits his cave at Union Square November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111601 )

5-year-old leukemia survivor Miles, also known as BatKid exits his cave at Union Square November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111602 )

Police escorts 5-year-old leukemia survivor Miles, also known as BatKid and Batman after they arrest the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111729 )

Police escorts 5-year-old leukemia survivor Miles, also known as BatKid and Batman after they arrest the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111732 )

5-year-old leukemia survivor Miles, also known as BatKid and Batman leave a former bank after arresting the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111743 )

5-year-old leukemia survivor Miles, also known as BatKid leaves in his Batmobile after arresting the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188111745 )

Miles Scott, dressed as Batkid, center, walks with Batman to save a damsel in distress on the Cable Car line 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) ( Boys Batman Wish )

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) ( Boys Batman Wish )

Miles Scott, dressed as Batkid, right, runs with Batman after saving a damsel in distress 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) ( Boys Batman Wish )

5-year-old leukemia survivor Miles, also known as BatKid leaves in his Batmobile after arresting the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188113094 )

A San Francisco police officer on bike escorts 5-year-old leukemia survivor Miles, also known as BatKid after arresting the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188113096 )

San Francisco police officers arrest the Riddler with the help of 5-year-old leukemia survivor Miles, also known as BatKid November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188113098 )

5-year-old leukemia survivor Miles, also known as BatKid runs into a former bank vault to arrest the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188113101 )

5-year-old leukemia survivor Miles, also known as BatKid and Batman arrive at former bank vault to arrest the Riddler November 15, 2013 in San Francisco. Make-A-Wish Greater Bay Area foundation turned the city into Gotham City for Miles by creating a day long event bringing his wish to be a BatKid to life. (Photo by Ramin Talaie/Getty Images) ( 188113104 )