The US Navy (USN) is set to commence testing with an upgraded version of the Northrop F-5N fighter, setting the stage for the block upgrade of 22 former Swiss Air Force F-5E/F fighters, which will serve in the aggressor role. The USN’s Specialized and Prove Aircraft programme office – PMA-226 - performed the upgrade work on the F-5N, modernising the cockpit and avionics, as well as improving the safety of the legacy platform, says Naval Air Systems Command (NAVAIR). Source: US Navy...