Air Force Under Secretary Matt Donovan will serve as acting secretary beginning June 1.
Secretary Heather Wilson will resign May 31, after being selected to serve as president of the University of Texas at El Paso. Wilson began her service in May 2017.
"In her two years as secretary, Heather defined the Air Force the nation needs and made incredible progress in implementing the strategy to get us there," acting Defense Secretary Pat Shanahan said in a statement today. "It is fitting that a key member of her leadership team will assume her role to keep the momentum going. Matt will do a fantastic job."
Donovan was confirmed as Air Force under secretary in August 2017. He previously served as policy director for the Senate Armed Services Committee.