The Military Order of the Purple Heart Chapter 608 will award the Warriors Medal of Valor to veterans who attend the 4th annual Intertribal Social Pow-Wow at Watson Lake in Prescott that runs this Friday through Sunday, said (Ret.) USMC Sgt. Alfonso Santillan Jr. The public is invited to attend the pow-wow, and various tribes are contributing presentations and social dancing. Arts and crafts and food vendors also will be on site.