ARNOLD AFB, Tenn., Sept. 25 -- Arnold Air Force Base issued the following press release:

A different type of testing is in progress at Arnold Air Force Base.

The latest effort does not involve propulsion or aerodynamics. Instead, validation testing is ongoing for all military personnel at Arnold, headquarters of Arnold Engineering Development Complex, to ensure protective masks fit and seal properly.

"Upon appointing two certified Mask Fit Validation Monitors, mask fit validation testing is officially underway within AEDC," said AEDC Chief of Logistics and Health Services William Russell. "Administering these validation tests is paramount to ensuring every Airman adheres to grooming standards and maintains operational survivability in ha...