Travel can be fun, especially when visiting a foreign country. But it's also important to not stick out as a tourist too much, lest you become a potential target for thieves, terrorists, or kidnappers!

So, who better to give tips for blending in than the CIA, whose operatives on assignment overseas call it “being the gray man” who blends in and doesn’t alert the world to their American citizenship and all of the assumed baggage that can bring.

This article offers several tips on how to think like a spy on the ground overseas.