The NFL authorized players to wear Guardian Caps during games this season in an effort to reduce head injuries. Here's a look at what they are and how they're used.
The helmets of Indian soldiers have been a talking point in the past, and though a lot has changed over the years, the phasing out of older models is an ongoing process.
With the paddock back in the States for the second race on American soil this season, teams pulled out all the stops to embrace the red, white and blue.