The Air Force is weighing buying a new U.S variant of the modernized F-16 Fighting Falcon, several sources have told Inside Defense , opening the possibility of adding more of the jets to the domestic military fleet. Block 70 F-16s, which are currently only made by Lockheed Martin for foreign partners, could fill capability gaps as aircraft age out at a lower cost than replacing the service’s legacy jets with the F-35 Joint Strike Fighter, said one congressional aide, who...