U.S. President George W. Bush (news - web sites) and his wife, Laura arrive at the Estacion Mapocho Cultural Center at the APEC (news - web sites) Summit, Saturday, Nov. 20, 2004, in Santiago, Chile. To the right is the unidentified U.S. Secret Service Agent who was originally blocked from entering. (AP Photo)
For all we know those CIA agents were detained because there a was a plan to take the President out, once the CIA agents were removed.