The content originally appeared on: CNN U.S. arms maker Lockheed Martin Corp said on Sunday it terminated its plan to acquire rocket engine maker Aerojet Rocketdyne Holdings Inc for $4.4 billion. The move comes after the U.S. Federal Trade Commission voted unanimously last month to sue to block the deal over antitrust concerns. The merger, which was announced in late 2020, drew criticism as it would give Lockheed a dominant position over solid fuel rocket motors - a vital piece […]