Country superstar Toby Keith has just returned from a top secret tour of duty, performing for U.S. troops in the Persian Gulf and Germany. The singer spent five days over Memorial Day weekend performing at military bases, including Camp Fallujah, and visiting wounded troops.

He said, "You can't appreciate what these people do until you see it. Everybody is so good at what they do, and when you come here, you can really understand why America is the number-one fighting force in the world."

It was Keith's fourth United Services Overseas tour.

Check out some of Toby Keith's ringtones.

(This news article provided by World Entertainment News Network)