Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: SAVANNAH, Georgia (CNN) -- Walt Peters knows what it's like to fear for his life. He knows how it feels to board a plane, deploying for combat. He knows the feeling of making it home alive. Walt Peters is often among the last people soldiers see as they deploy and the first they see upon their return. That's why the retired Vietnam veteran has stood outside at Hunter Army Airfield in Savannah, Georgia, for the past four years as a beacon of pride and support, welcoming home returning soldiers and wishing "Godspeed" to those deploying. "To me, if it wasn't for our soldiers and our veterans, we would not have this beautiful country," says Peters. "These guys are our freedom."Walt Peters welcomes soldiers home, wishes "Godspeed" to those deployingThe Vietnam veteran has greeted an estimated 20,000 soldiers since 2004He says he lost sight as a result of chemical diabetes from Agent Orange exposure 
 Question:"When I went to _ on my tours I'd never had this.

Vietnam