Rep. Adam Kinzinger, once a frequent critic of President Donald Trump, said this weekend he would be honored to work under the commander-in-chief.

Kinzinger, who serves in the Air National Guard, said if the president wanted him for the position of U.S. Secretary of the Air Force, he would consider the role.

“If the president would determine I would be the candidate, the person that he wanted to lead the Air Force, I would certainly strongly consider it,” the Illinois Republican said in an appearance on Fox News. “It’d be an honor to be considered.”

Kinzinger is a member of the Foreign Affairs Committee and a major in the Air National Guard who served tours in Afghanistan and Iraq. He is a defense hawk and has been critical of Trump’s military decision-making in appearances on cable news.