U.S. sending F-35 fighters to Europe for training: Pentagon

The U.S. Air Force will this weekend deploy a small number of F-35A fighter jets to Europe for several weeks of training with other U.S. and NATO military aircraft, the Pentagon said on Friday.In a statement, the Pentagon said that the deployment would allow the U.S. Air Force to "further demonstrate the operational capabilities" of the stealthy fighter jet.The F-35, which is the Pentagon's costliest arms program, has been dogged by problems.