1. Use your instincts; if a situation appears suspicious, leave the scene.
2. Don't become complacent; never let your guard down, no matter where you travel.
3. Don't rely solely on the government to provide you with crisis or threat information -- do your own research, too.
4. Have a plan on where/when to meet family members in case of attack; map assorted evacuation routes from home/work.
5. Keep extra copies of your passport/birth certificate/ Social Security cards, other records. Keep copies in storage or with relatives, friends. Carry copy of passport when traveling overseas.
6. Never check luggage at curbside check-in at airports; carry luggage on board with you, if possible; carry as few bags as possible.
7. Spend as little time at the airport as possible; avoid heavily glassed areas.
8. When flying, wear comfortable clothing and shoes in case you need to quickly evacuate.
9. Try to fly on wide-body planes; terrorists often avoid hijacking them.
10. When traveling abroad, don't advertise your corporate affiliation or title on luggage or other items.
11. When traveling overseas, stay in an American chain hotel; security is usually more stringent.
12. When in a foreign country, don't advertise that you're American by speaking loudly, holding up maps, exchanging currency at airports, showing American flags, etc…
13. Try to avoid crowded areas, especially in large cities; avoid public transportation and major tunnels and bridges during heavy commuting times.
14. Never stay in a hotel with an underground parking garage and never park in such a garage -- terrorists love car bombs.
15. Stock "safe-haven" rooms in office and home with duct tape, plastic sheets, flashlight, food/water supply, first-aid kit, portable radio and cloth to fill gaps in doors so harmful agents don't seep in.
16. Store a decent amount of cash someplace in case ATMs malfunction.
17. Carefully inspect mail before opening; check for return address, postmark, excessive postage, etc…
18. Never take the first taxicab in line; hail a moving cab instead.
19. If ever a hostage on a plane, never make eye contact with captors, speak unless spoken to, or do anything to bring attention to yourself; familiarize yourself with typical airline hijackings.
20. Know what to do in case of a biological, chemical or nuclear attack in terms of symptoms, decontamination, etc…
21. Keep an eye out for unattended items when using mass transit or in airports.
22. Only carry essential money cards and identification.
23. When traveling abroad, read local newspapers to pinpoint dangers there; check the State Department's travel advisories.
24. Pay attention to: surroundings; someone paying an usual amount of attention to a prominent landmark; someone nervous or jumpy or trying to access off-limit areas; someone trying to hide something.
25. Make out a will and letter of instruction in case you die. Get fingerprinted, get your blood samples and obtain dental X-rays so your body can be identified in case you fall victim to attack.
26. Do not live or work in a highly urban area that most likely would be a terrorist's target, such as New York City, Washington, D.C., or San Francisco.