The reason I say "foreign" in the title as opposed to the US embassy stating Americans is because non-native English speakers cannot differentiate among Americans, British, New Zealanders, Australians, etc.
U.S. Embassy Cairo
Security Message for U.S. Citizens
Threat Information Directed Against U.S. Citizens
September 28, 2012
September 28, 2012
The Embassy has credible information suggesting terrorist interest in targeting U.S. female missionaries in Egypt. Accordingly, U.S. citizens should exercise vigilance, taking necessary precautions to maintain their personal security.
U.S. citizens are advised to maintain valid travel documents. U.S. citizens living or traveling abroad are encouraged to enroll in the Smart Traveler Enrollment Program (STEP). U.S. citizens without internet access may enroll directly at any U.S. Embassy or Consulate. By enrolling, U.S. citizens make it easier for the Embassy or Consulate to contact them in case of emergency.
U.S. citizens traveling abroad should regularly monitor the U.S. Department of State's, Bureau of Consular Affairs website, where the current Worldwide Caution, Travel Warnings, Travel Alerts, and Country Specific Information can be found. The U.S. Embassy also encourages U.S. citizens to review "A Safe Trip Abroad,” which includes valuable security information for those living and traveling abroad.
Follow us on Twitter and the Bureau of Consular Affairs page on Facebook as well. You can also download our free Smart Traveler App available through iTunesand the Android market to have travel information at your fingertips. In addition to information on the internet, travelers may obtain the latest information on security conditions by calling 1-888-407-4747 toll-free in the United States and Canada, or outside the United States and Canada on a regular toll line at 1-202-501-4444. These numbers are available from 8:00 a.m. to 8:00 p.m. Eastern Time, Monday through Friday (except U.S. federal holidays).
For further information, U.S. citizens may telephone the U.S. Embassy in Cairo at ((20) 2-2797-2301). After hours (for emergencies), U.S. citizens may telephone the U.S. Embassy in Cairo at ((20) 2-2797-3300).