U.S. arms maker and Pentagon’s No.1 weapons supplier Lockheed Martin Corp has announced that it will buy rocket engine maker Aerojet Rocketdyne for $4.4 billion. Lockheed Martin released a statement on Monday saying that “it has entered into a definitive agreement to acquire Aerojet Rocketdyne Holdings, Inc. (NYSE: AJRD) for $56 per share in cash, which is […]