September 2000 and after: Secret Service Has Air Surveillance Capabilities

It is reported that the US Secret Service is using an “air surveillance system” called Tigerwall. This serves to “ensure enhanced physical security at a high-value asset location by providing early warning of airborne threats.” Tigerwall “provides the Secret Service with a geographic display of aircraft activity and provides security personnel long-range camera systems to classify and identify aircraft. Sensor data from several sources are fused to provide a unified sensor display.” [US Department of Defense, 2000; US Department of the Navy, 9/2000, pp. 28 ] Among its responsibilities, the Secret Service protects America’s highest elected officials, including the president and vice president, and also provides security for the White House complex. [US Congress, 5/1/2003] Its largest field office with over 200 employees is in New York, in Building 7 of the World Trade Center. [Tech TV, 7/23/2002] Whether the Secret Service, in New York or Washington, will make use of Tigerwall on 9/11 is unknown. Furthermore, in New York the Secret Service has a Stinger missile secretly stored in the WTC, to be used to protect the president if the city were attacked when he visited. Presumably it keeps this is in Building 7, where its field office is. [Weiss, 2003, pp. 379] As well as Tigerwall, the Secret Service appears to have other air surveillance capabilities. Counterterrorism “tsar” Richard Clarke will describe that on 9/11, the Secret Service had “a system that allowed them to see what FAA’s radar was seeing.” [Clarke, 2004, pp. 7] Barbara Riggs, a future deputy director of the Secret Service who is in its Washington, DC headquarters on 9/11, will describe the Secret Service “monitoring radar” during the attacks. [PCCW Newsletter, 3/2006; Star-Gazette (Elmira), 6/5/2006] Furthermore, since 1974 the Secret Service operations center has possessed a special communications line from the control tower of Ronald Reagan Washington National Airport. This hotline allows air traffic controllers monitoring local radar to inform agents at the White House of any planes that are off course or appear to be on a “threatening vector.” [Time, 9/26/1994]