When Greg Callen fell from his friend's 13-foot balcony in August 2005, his initial thoughts were those of panic, fear and terror.

As Callen crawled towards the road after the fall, all that ran through his mind was how life as he knew it was over.

He was right.

The impact from the fall was so great that it left Callen, 34, paralyzed from the waist down. Known as thoracic 12 complete paraplegia (T12), the injury affects the thoracic nerves in the body's...
more »