FILE PHOTO: U.S. President Donald Trump listen to U.S. Chief of Staff of the Air Force David W. Allvin next to an image of an F-47 sixth-generation fighter jet in the Oval Office at the White House, in Washington, D.C., U.S., March 21, 2025. REUTERS/Carlos Barria/File photo

(Reuters) -The United States Air Force chief of staff announced on Monday that he planned to retire in the coming months, but did not provide a reason.

The announcement by General David Allvin was a surprise, as he will have served just two years out of the typical four-year assignment by the time he retires.

“I’m grateful for the opportunity to serve as the 23rd Air Force Chief of Staff and I’m thankful for (Air Force) Secretary Meink, Secretary Hegseth and President Trump’s faith in me to lead our service,” Allvin said in a statement.

Allvin said he will retire on or about November 1.

It was unclear whether Allvin chose to retire or was asked to by Pentagon leaders such as Defense Secretary Pete Hegseth. The Office of Secretary of Defense did not immediately respond to a request for comment.

Hegseth has fired a number of senior military officials since taking office in January, including the chairman of the joint chiefs of staff, the head of the U.S. Navy and the judge advocates general for the Army, Navy and Air Force.

(Reporting by Idrees Ali; editing by Ryan Patrick Jones and Leslie Adler)