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The nation's financial upheaval has sucked so much oxygen out of the media room that we've barely gotten coverage of a horrific bombing of the Marriott in Islamabad 10 days ago and the September 17 attack on the U.S. Embassy in Sana'a, Yemen.

But out of media sight is not out of business travelers' minds. We know what this stuff means to our lives on the road. We all have a playbook, a set of time-tested rules honed during a generation of terrorism aimed at travelers in general and U.S. business travelers in specific.

Shorn of politics, polemics, and the ideology, staying safe when traveling internationally often starts with a simple assumption: Avoid anything that smacks of U.S. capitalism. U.S. flag airlines, lodgings flying the flag of an American hotel chain, and even American fast-food outlets have disproportionately been targets of terrorists in the last 40 years.

The Islamabad bombing on September 20 is a textbook example. The hotel building is owned by a Pakistani businessman. The heavily guarded property is just a few hundred yards from the prime minister's residence. The bombers seemed interested in making a statement about internal Pakistani politics. Most of the hundreds who were killed and wounded were not Americans. But the Marriott name drew business travelers from around the world and made the bombing more newsworthy, because it was seen as an attack on an icon of U.S. business.

America's high-profile allies often pay too. No U.S. airline serves Pakistan, but British Airways got the message. Two days after the Marriott bombing, B.A. canceled its flights from London to Islamabad indefinitely.

"I've put British airlines and hotels on the 'do not use' list too," the travel manager of a major multinational corporation told me last week. "I think our experienced travelers knew instinctively without being told, but our newbies need to be reminded. In troubled times, you lower your profile and avoid as many symbols of Western commerce and culture as you can."

Back in the day, that often meant switching from a U.S. airline to a "neutral" carrier like Swissair; KLM, the Dutch airline; or SAS, the international airline of Scandinavia. But Swissair is out of business. SAS is less omnipresent than it used to be, and KLM is now part of a company controlled by Air France—and has issues, as vividly shown by last week's on-board terrorist arrests at a German airport.  These days, travel managers tell me, the neutral airlines are carriers such as Singapore Air or Air Canada, which offers decent worldwide connections via its Toronto hub. Lufthansa and Japan Airlines are also perceived to be safe, although it's worth nothing that no carrier is immune to a potential terrorist attack.