] In its weekly bulletin distributed to 18,000 agencies,
] the FBI says to look out for people wearing bulky jackets
] on warm days, smelling of chemicals, or even individuals
] whose fists are tightly clenched.
]
] The bulletin also says suicide bombers may disguise
] themselves in stolen police uniforms or even as pregnant
] women.

Watch out for pregnant women who clench their fists; THEY ARE TERRORIST.

CNN.com - FBI warns of possible suicide attacks - May 20, 2004