Rishi Sharma is keeping the memories of World War II combat veterans alive, interviewing 3,000 in the last decade. The 27-year-old is on a “mission” to preserve history by meeting every living vet and sharing their stories on his website, Remember WWII, he said to CBS News. Sharma recently spoke with 100-year-old Nils Mockler of New York, a former Marine intelligence scout, whose first battle was at Iwo Jima. When Mockler thinks about that time, the “hair on my arms still stands up,” he said.