Trump targets Lockheed Martin's F-35 fighter jet costs

U.S. President-elect Donald Trump took aim at another major defense contractor on Monday, saying the cost of Lockheed Martin's F-35 fighter jet program was too high. The aerospace giant's shares dropped about 4 percent in early trading after Trump's tweet, while shares of several other defense contractors also weakened. "The F-35 program and cost is out of control," Trump said on Twitter.