Mark Zupan rolled into the room, the bright red spokes of his compact wheelchair flashing. His face broke out in a big grin when he saw two other young men parked at the back, also in wheelchairs. They chatted briefly, obvious friends, perhaps teammates in a sport...

Mark Zupan rolled into the room, the bright red spokes of his compact wheelchair flashing. His face broke out in a big grin when he saw two other young men parked at the back, also in wheelchairs. They chatted briefly, obvious friends, perhaps teammates in a sport...