Pentagon Grounds Entire F-35 Fleet
By: Robert Burke
Updated: February 22, 2013
The Pentagon says that a cracked engine blade was discovered.
The crack was discovered during a routine inspection at Edwards Air Force Base in California.
The F-35 program, which costs nearly $400 billion, is the Pentagon's most expensive weapons system. Investigators are looking for a cause and until one is found all flight operations will remain suspended.
