Airman 1st Class Ekaterina Morissette, 437th Aircraft Maintenance Squadron crew chief, wears hearing protection as she marshals in a C-17 Globemaster III Aug. 27, 2012 at Joint Base Charleston – Air Base. Hearing protection is one of the ways to reduce the exposure to the effects of hazardous noise.
Calculating OSHA Employee Permissible Exposure Limit for Noise