Moscow blasts shows airport vulnerability

This story will be found all over the media today but bears repeating in this space. The explosion in one of Moscow's major airports underscores a problem that no amount of passenger screening and protection of travelers and aircraft beyond checkpoints can ever solve. The most vulnerable places for people to be these days are not aboad airplanes but at major transportation hubs, like airport arrival halls, train stations, ferry terminals and the like. We can still take heart from the fact terrorist acts such as this one are still extraordinarily rare, and have yet to keep people from abandoning all travel.