The USAF Thunderbirds perform a head on pass at the 2012 Lauderdale Air Show in Ft. Lauderdale Florida on April 28, 2012. After nearly five years, sponsors were able to reintroduce the event to the city. Ft. Lauderdale Police estimated that over 475,000 spectators attended the weekend long event. .The Thunderbirds performance was shortened as unstable weather moved into the area. UPI/Joe Marino-Bill Cantrell