Kemberlee recently noted that President-elect Trump tweeted costs for plans to build a new Air Force One were “out of control” and that the order should be cancelled.

File Trump’s tweet under “Opening Negotiations”.

The head of Boeing is saying he promised President-elect Donald Trump that the manufacturer would complete the Air Force One project for less than the $4 billion the president-elect had claimed it would cost.

Dennis Muilenburg on Wednesday told reporters outside Trump’s coastal Florida estate that his meeting with the president-elect was “very productive.”

Trump earlier this month had ripped Boeing over the cost of the program to replace the aging presidential aircraft.

Muilenburg did not specify how much less the final cost would be, however,in his post-meeting statements.

“We’re going to get it done for less than that, and we’re committed to working together to make sure that happens,” Muilenberg said. “I was able to give the president-elect my personal commitment on behalf of the Boeing Co. This is a business that is important to us. We work on Air Force One because it’s important to our country and we’re going to make sure he gets the best capability, and that it’s done affordably.

Muilenburg wasn’t the only aviation CEO Trump discussed cost reductions with, either.

Trump also met Wednesday with Marillyn Hewson, CEO of Lockheed Martin. Trump recently criticized the cost of the company’s F-35 fighter jet program.

“We’re trying to get costs down, costs,” Trump told reporters Wednesday after the meetings, Bloomberg reported. “Primarily the F-35. That program is very, very expensive.”

In a statement, Hewson called the meeting “productive.”

“I had a productive meeting with President-elect Trump this afternoon,” she said. “I appreciated the opportunity to discuss the importance of the F-35 program and the progress we’ve made in bringing the costs down. The F-35 is a critical program to our national security, and I conveyed our continued commitment to delivering an affordable aircraft to our U.S. military and our allies.”

It appears Trump has been more productive on behalf of the American people as President-Elect during the last several weeks than Obama has been as President for the past 8 years.