"Thank you for your service."

[ASTalumna06]

Originally Posted by Munchkin03

I'm sure the people who do it at the grocery store are doing it in part to make themselves feel more virtuous when they don't do shit for veterans, active duty, and their families at other times.

This. If you really want to show your appreciation, volunteer at a veterans hospital, adopt a soldier, or donate money to people who have a family member serving overseas. Make a difference, rather than simply going out of your way to say something that the rest of us are already thinking, and which that soldier probably already knows.