Family searches for answers

By every account, Mark Austry was an outgoing, energetic go-getter, who loved not only his family, but sports. He sounds like the kind of guy that every parent wants their little boy to grow up to be. But, his life was cut short Sunday when he collapsed after finishing a half marathon in Dallas. There are no answers now about what killed the 32-year old father of two, but his family doesn't believe he had any health problems.

It is such a mystery. What could take the life of seemingly healthy young athlete? It only adds to the agony for those who knew and loved Mark Austry, that now they must wait weeks to see what took the life of this promising man. Watch the emotional interview with his brother at http://bit.ly/DawnStories.