Carlos gave very few interviews, and even fewer on-camera opportunities. Here is a pretty in-depth talk about his days in Vietnam.
http://www.youtube.com/watch?v=AVJONj95so4&feature=related
http://www.youtube.com/watch?v=tiReoU_Edo4&feature=related
http://www.youtube.com/watch?v=Jmg9VHjlx1M&feature=related
http://www.youtube.com/watch?v=AVJONj95so4&feature=related
http://www.youtube.com/watch?v=tiReoU_Edo4&feature=related
http://www.youtube.com/watch?v=Jmg9VHjlx1M&feature=related