President Trump signed an executive order on Friday that would allow the Air Force to call upon 1,000 retired airmen to return to active duty amid a nationwide shortage of military combat pilots.

The White House announced that Trump would use powers under the National Emergencies Act signed in the aftermath of the terror attacks on Sept. 11, 2001, to subject the secretaries of the Army, Navy and Air Force to the direction of the secretary of Defense on the matter.

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Pentagon spokesman Navy Cmdr. Gary Ross said in a statement to CNBC that Defense Secretary James Mattis James Norman MattisBiden courts veterans amid fallout from Trump military controversies Trump says he wanted to take out Syria's Assad but Mattis opposed it Gary Cohn: 'I haven't made up my mind' on vote for president in November MORE now has the power to recall up to 1,000 retired military pilots into service to address the shortage, a responsibility Ross said Mattis will likely delegate to the secretary of the Air Force.

The Pentagon has said that the Air Force is lacking 1,500 pilots for active duty, on top of shortages of aviator officers in the Navy, as mentioned in the White House memo.

Trump's order comes as the Trump administration is preparing to ramp up the U.S. military presence in Afghanistan as part of the administration's new stabilization strategy for the country.

The administration's plan in the war-torn country, where U.S. forces have been for 16 years, will have a heavy emphasis on air support for ground forces and training the Afghan air force.