By Sasha Lenninger Click here for updates on this story WASHINGTON, DC (KOAT) — On the National Mall in Washington, D.C., is the World War II Memorial. It honors the more than 407,000 servicemen who died in combat. “We were the first. We were in the invasion of Guam,” said Antonio Marquez. The 99-year-old is the only WWII veteran on this year’s Honor Flight. His service with the Navy is something he still remembers. Data shows that roughly 6…