A commonly regurgitated myth on military ranges is that there is a safety requirement regarding the wearing of helmets (Kevlar, ACH, MICH, etc.) and/or body armor (IBA, Interceptor, etc.)
WRONG! This is typical monkey-see, monkey-do nonsense perpetrated by personnel inventing non-existent safety issues rather than reading the actual, written regulation. I invented a cartoon character and mascot named "Marvin the Safety Maggot" for such folks.
Check out this a photo of a two star General shooting a .50 caliber machine gun on an Army range. I found this on the front page of AKO (Army Knowledge Online)
Here is the caption:
Maj. Gen. Michael Ferriter, commanding general of Fort Benning, shoots at targets Tuesday, Dec. 8, 2009, at Red Cloud Range using a M2 A1 .50-caliber machine gun. (Photo by U.S. Army)
Not good enough for you? Any literate person can browse the written regulations on range safety.
Army Regulation on Range Safety: AR 385-63
Training Circular on Ranges: TC 25-8
DA Pamphlet on Range Safety: DA PAM 385-63