|Total prohibited items||3,775,345||6,114,612|
|Other cutting instruments||1,846,207||2,973,413|
a All data, except enplanements, for April though December.
All data, except enplanements:
U.S. Department of Homeland Security, Transportation Security Administration, personal communication.
U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Schedule T-3 data, various years (Washington, DC: 2003).