Iraq War veteran Troy Yocum receives donations into his ammunition can in Franklin, Ind., May 7 during his 7,000-mile walk across America dubbed the "Drum Hike," a charity outreach aimed at raising $5 million for struggling veterans and their families. The ammunition can was a gift to him from Vietnam War veteran and two-time Purple Heart Medal recipient Dallas Wittgenfeld. Wittgenfeld personally used the ammunition can to collect the first donations for the Vietnam Veterans Memorial Fund, used to build the Vietnam Memorial in Washington.