Sarah Huckabee Sanders, White House press secretary, announced the president’s intention in a tweet posted Thursday.
“I remain committed to modernizing the force so our remarkable Soldiers, Sailors, Airmen, and Marines have everything they need to keep our military lethal and our country safe,” he added.
He took over as interim defense secretary after James Mattis stepped down in December.
Shanahan became deputy secretary at the Pentagon when the Senate confirmed him to the department’s no. 2 position in 2017.
He is a three-decade Boeing (NYSE: BA) veteran who held senior leadership roles at the company, including senior vice president of supply chain and operations.