A stick of dynamite was found in a college student's checked luggage on a Continental Airlines flight from Argentina, one of seven security incidents Friday that caused U.S. flights to be diverted, evacuated, searched or delayed.

While you're waiting for your checked luggage to arrive, ponder this:

The remarkable track record of the security force at Ben-Gurion Airport near Tel Aviv — no successful hijackings ever— is also often chalked up to behavioral profiling, but that too is naïve. For three decades, the airport has had intensive security practices and a sky marshal program. All departing passengers are interviewed and subjected to one-on-one searches that, according to Rafi Ron, former head of security at Ben-Gurion, take an average of 57 minutes per person.