"I would especially be wary about attacks on hotels. Even the best hotels are not secure because it is almost impossible to vet all visitors or effectively police public areas such as lobbies, back-of-the-house operations or even the roads directly surrounding the properties. In fact, more hotels have been attacked in recent years than airports and airlines," Brancatelli wrote in recent blog post. Bottom line: At least for now, proceed with extreme caution."
Former National Security Advisor and ABC News Contributor Richard Clarke said bin Laden's death closes one chapter in the U.S. war on terror, but could very likely open a new one.
"It shouldn't divert us from the other Al Qaeda cells out there," Clarke said. "It's not over and important no one thinks it's over but it is satisfying and we should feel some closure on this chapter."
ABC News Richard Esposito contributed to this report.