ABOARD THE AIRCRAFT CARRIER GEORGE WASHINGTON -- The Navy is in the midst of completing its final at-sea developmental test of the Joint Strike Fighter that includes the first-ever use of test pilots carrying external weapons on the jet. Tom "Briggo" Briggs, the air vehicle engineering department head at Naval Air Systems Command, told reporters here Aug. 15 the F-35C carrier variant will carry concrete bombs on three external pylons located on the jet's wings. The concrete is molded to...