Bureau of Transportation Statistics (BTS)
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Table 3-2
Prohibited Items Intercepted at U.S. Airport Screening Checkpoints: 2003-2005

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Items 2003 2004 2005
Other cutting instruments 2,973,413 3,567,731 3,276,941
Knives 1,961,849 2,058,652 1,822,888
Incendiaries and explosive/ flammable materials 494,123 693,649 407,086
Clubs 25,139 28,813 20,531
Box cutters 20,991 22,350 21,319
Firearms 683 650 2,217
Other 638,414 717,754 10,358,159
Total prohibited items 6,114,612 7,089,599 15,909,141

Notes: Other cutting instruments includes scissors, hatchets, swords, sabers, meat cleavers, ice axes, and picks.

Knives includes any length and type except round-bladed, butter, and plastic cutlery.

Clubs includes martial arts items, baseball bats, night sticks, hammers, pool cues, and billy clubs.

Firearms includes any weapon (including a starter gun) that is designed to or may readily be converted to expel a projectile by the action of an explosive, as well as spear guns, BB guns, flare pistols, compressed air guns, and stunning devices.

Other refers to tools, self-defense items, compressed gas cylinders, bleach, and certain sporting goods. The jump in number of other prohibited items in 2005 is a result of the inclusion of lighters as prohibited items as of April 14, 2005.

Source: U.S. Department of Homeland Security, Transportation Security Administration, personal communication, November 2006.