 Force protection is at its highest level in 10 years. The second highest security level, force protection condition, Charlie. New intelligence indicates some form of a terrorist attack is being planned to target U.S. troops. Bases are on high alert, but not on lockdown, I'm told. The U.S. has more than 100,000 service members stationed across Europe. The bases on high alert include U.S. European Command headquarters in Stuttgart, Germany. Fox's Jennifer Griffin at the Pentagon. America is listening to Fox News.