CNN Anderson Cooper 360 December 18, 2013 01:05:00
Casualties at one time. >> reporter: mcguire says the entire seal community was devastated. it's a commune day marcus latrel and his twin brother decided they wanted to be part of when they were teenagers. >> he had in his head, this is what we'll do. it will be great. jump out of airplanes, shoot guns, blow stuff up, scuba dive and there is an 80% chance we're going to die. i'm like sign me up, man. >> reporter: he became a seal at the age of 25 and says receiving the special warfare insignia was the proudest accomplishment. >> do you remember getting the try dant put on your chest? . january...