Bob, condolences on the death of your cousin. I live near White Rock Lake and I used to see Dave running all the time, although we never met formally. As runners I am sure we all see the same people hundreds of times out on the trail and we never know their names. I can tell you though, when I saw his picture in the paper it hit me like a ton of bricks. Also, based on the comments I have read about him in the paper and on various local news sites, he was a very accomplished man and a great person.
I will silently run one for Dave for sure.