sentences:  The Department of Homeland Security Appropriations Act, 2020 makes available $100,500,000 for long lead time material for a twelfth National Security Cutter.In January 2018, a whistleblower lawsuit against Lockheed Martin Corp. was unsealed, alleging that the company had sold defective communications systems to the NSC program.The qui tam lawsuit, filed by a former Lockheed employee, said Lockheed had concealed known problems with the radio frequency distribution systems installed on nine NSCs, preventing them from simultaneously transmitting and receiving multiple radio signals.