Society has told us time and time again that men and women are too different to compete against one another. Yet, there are always groups bent on challenging convention. This time, Alaskan roller derby skaters are meeting it head on.

On any given Thursday, you can hear the sound of their skates glide across the smooth, waxed floors. The soft thud as the skate hits the wood, followed by the whir of the wheels and bearings spinning. Then the clap of gear hitting gear, the crack of one helmet colliding with another and the slap of bare skin as a skater goes down. Sometimes, you can almost hear the bruises forming.

Erase what you think you know about roller derby. Forget Ellen Page and the movie Whip It (except the feminist bad-ass part), forget the costumes and the short skirts—keep the tattoos and add uniforms. Think hockey, mixed with speed skating and some Xena the Warrior Princess thrown in for good measure.

Allow me to cordially re-introduce you to the Rage City Rollergirls and the select few skaters who make up the elite Rage City All Stars, as they prepare for their season-opener bout.