The U.S. Department of Justice has issued subpoenas for testimony before a federal grand jury to several New York Times journalists who reported on security flaws in President Donald Trump's new Air Force One aircraft. The legal move comes following a series of articles the reporters published this week, according to which the presidential plane donated by Qatar lacks advanced anti-missile capabilities that existed in the old aircraft. The Department of Justice is using the subpoena to compel the reporters to testify about the source materials in their possession, and possibly also to demand that they reveal the sources who leaked the classified information about the president's plane to them.