When Matt Kenney sustained a traumatic brain injury during the 2012 Mount Marathon race, his prognosis was bleak.

It was unlikely he would survive, doctors told Kenney's wife, Gretchen.

He did.

Regaining the ability to walk and talk wasn't supposed to happen, either.

It did.

Not only is Kenney walking and talking, the Anchorage man is competing in Friday's Fourth of July race just two years after his horrific fall.

Read more: Kenney returns to Mount Marathon two years after life-threatening accident