So, I have had some enlightenment by my employers who make most of their money from fire. The Gentex is tested and approved for federal employees as every DOI type is such. So...if it’s only approved for other federal employees (military types) the standard for DOI becomes the same. Liability dictates federal contractors follow along.
That said, the testing is a joke! Example; a steel ball dropped on the top of the helmet to determine its failure point, chin strap tested to failure of more than 1000 pounds.
Well none of the tests are what one would experience in a crash or 1000 pound pull on your jaw bone???
Most of us have figured out other manufactures provide much more comfortable designs with equal survivable likeliness.