This July 24, 2013 photo provided by the Office of George Bush shows President George H. W. Bush, front center, with his Secret Service security detail including Jon, fifth from left, holding his son ... more 
This July 24, 2013 photo provided by the Office of George Bush shows President George H. W. Bush, front center, with his Secret Service security detail including Jon, fifth from left, holding his son Patrick (last name withheld at family's request), 2, in Kennebunkport, Maine. Bush this week joined members of his Secret Service detail in shaving his head to show his support for the two-year-old who is being treated for leukemia and started losing his hair. (AP Photo/Office of George Bush) less 
1 / 27
Associated Press | Photo By Office of George Bush
Wed, Jul 24, 2013 5:45 PM EDT