Lt. Cmdr. Kyle Shepard, resident audiologist and researcher at the Naval Air Warfare Center Aircraft Division, demonstrates audio testing in an anechoic chamber at Naval Air Station Patuxent River, Maryland. The aeromedical officer leads research that proved the Navy could use digital scanning technology and 3D printers to produce custom hearing protection in-house to address hearing damage in service members. Hearing damage affects at least 10% of the military according to data from the Navy and Marine Corps Public Health Center. (U.S. Navy photo by Todd Frantom)