Vision Systems International, LLC, a subsidiary of Elbit Systems, received an $84.6 million follow on order from Lockheed Martin for pilot flight gear, as part of the system Development and Demonstration phase of Lockheed's F-35 fighter aircraft program. The deal follows a 2003 order, bringing the combined value to $156m. The helmet mounted displays, which include oxygen mask and chemical/biological hazard protection, will be supplied to all Lockheed's F-35 customers. Separately, Elbit denied reports in the Turkish press Tuesday that the Turkish government foreclosed a $10m. guarantee on a spy systems deal the two signed in 1999.