On September 11, 2001, President George W. Bush was interrupted as he attended an event at Emma E. Booker Elementary School in Sarasota, Florida, after an airplane hit the South Tower of the World Trade Center in New York City. He took off on a VC-25 from Sarasota-Bradenton International Airport with Colonel Mark Tillman, the senior pilot of Air Force One that day, in charge. Air traffic controllers gave Air Force One an ominous warning that a passenger jet was close to Air Force One and was unresponsive to calls.