International F-35 Fleet Begins Build Up at Eglin Air Force Base

ZM135, a British F-35B and the first international Lockheed Martin Lightning II, takes off from Naval Air Station Fort Worth Joint Reserve Base on July 23, 2012, en route for Eglin Air Force Base, Fla. The U.K. officially took ownership of ZM135 (formerly known as 'BK-1') at a ceremony in Fort Worth on July 19, 2012. The jet will be used for operational testing and evaluation