In light of the recent string of terrorist incidents, average citizens should keep their guard up and their eyes open especially when traveling overseas. Fly nonstop whenever possible on a reputable carrier and try to avoid peak travel times when airports are full and provide inviting targets. While it is appealing to take advantage of current first class travel bargains, you may be safer during an attack if you're in second class.
Terrorists often target first class passengers for particularly tough treatment.
Don't discuss your plans with strangers. You might put yourself at risk when you divulge information about your destination, your work or your family.