Thomas A. Kennedy, Raytheon’s chief executive, sounded like he was selling his company’s proposed merger with United Technologies not just as good for shareholders but as a patriotic endeavor.

“This is over all a great play for the United States of America, making us a better country, a much stronger country and a country that’s built on noble jobs,” Mr. Kennedy said on CNBC on Monday. “It’s a win-win for all.”

The grandiose sales pitch should not come as a surprise.

The deal coincides with pointed questions from many lawmakers and regulators about the economic benefits and costs of large mergers. President Trump, who has opposed some big corporate deals, said he was a “little concerned” that the Raytheon-United Technologies merger could raise the cost of military hardware.

The combined company, to be called Raytheon Technologies, would be a defense and aerospace colossus with annual sales of nearly $75 billion, more than either Lockheed Martin or Airbus posted last year. It would combine Raytheon’s missile and radar systems with United Technologies’ jet engines, which are used in commercial and military aircraft, including the F-35 fighter.