<iframe width="580" height="385" src="https://www.youtube.com/embed/idV-_OumxzE?hl=en" frameborder="0" allowfullscreen></iframe> <br>Once a critical hub for U.S. forces in Vietnam, Da Nang is now a city in Vietnam that some American veterans call home. » Subscribe to NBC News: ... <br><a href="https://www.youtube.com/watch?v=idV-_OumxzE">source</a>