Kevin Wise aka Keavin Lawdermilk is the fake Special Forces Soldier Master Sergeant, who gave Jensen and Jared Honorary Special Forces coins and a letter of appreciation at the Salute to Supernatural Chicago 2007.
In April 2008, the Supernatural Charity group Fandom Rocks, obtained permission to get two real Special Forces coins to Jared and Jensen. They were presented to them by Jim Beaver, who was himself a Marine.
- Story and pics of presentation at fandom_rocks.
Jared mentions this incident in his chapter in Family Don't End With Blood.
Information on Kevin Wise at www.professionalsoldiers.com