FL Marine
For your SA, the gate Marines are now checking helmets for DOT stickers here at MCB Quantico. Easy thing to bypass unfortunately, but good idea still. 2nd Tank Bn had a mandatory motorcycle club that took day-long rides with a lunch stop at whichever Hooters was closest. It was a fantastic thing to do, especially since so many Marines were buying motorcycles with their combat pay, much like now. Group rides did a good job of building camraderie and training them to ride safely and I'm glad to see II MEF is still doing this. It's a horrible thing to hear when a unit returns from combat with little to no casualties only to lose Marines to preventable motorcycle accidents.
Personally, I wear a DOT-approved carbon fiber helmet w/ my Gov't issued Wiley-X goggles (thanks, supply) and switch to a full-face in cold weather.