2,050 citizen soldiers and airmen have been activated by state governors, and that number will likely double by the weekend.
The Defense Production Act of 1950 was signed by President Truman amid concerns about supplies and equipment during that war.
President Trump said Wednesday that the Navy's pair of hospital ships will soon be stationed on the East and West coasts.
The U.S. has seen a shortage of testing kits as the novel coronavirus, or COVID-19, spreads.
Officials caution the hospitals are designed to treat combat trauma, not infectious diseases.
But the defense secretary urged caution on the deployment of field hospitals and the Army Corps of Engineers.
New Rochelle and surrounding Westchester County account for at least 108 cases out of 173 statewide.
The Pentagon stressed that the locations have been named as precautionary backup locations.
Camp Ashland, a Nebraska National Guard base roughly 30 miles from Omaha, will house the latest evacuees.
Two jetliners carrying 350 American evacuees from the epicenter of China's coronavirus outbreak landed Wednesday at Travis.
The Marine Corps and Navy are tightening the dress code for troops assigned to the National Capital Region and the Pentagon.
Corporal Thae Ohu has struggled in the five years since she says she was sexually assaulted by a fellow Marine.
Hundreds of Navy and other federal firefighters have been fighting for days to put out the blaze.
A report concluded that the unexpected deployment of a T-11R reserve parachute led to the death of Staff Sgt. Cole Condiff.
The Air Force launched a search for Staff Sgt. Tristin Blake Jarvis, 26, of the 51st Force Support Squadron on July 9.
