UPDATE 1-Pentagon grounds Marine Corps model of F-35 fighter jet
January 18, 2013 at 15:37 PM EST
WASHINGTON, Jan 18 (Reuters) - The Pentagon and U.S. Navy on Friday ordered a temporary grounding of the Marine Corps version of Lockheed Martin Corp's F-35 fighter jet after an incident that occurred during a training flight at Eglin Air Force Base in Florida on Wednesday.
