He's not young any more, but Kevin Hermening was at the time a young Marine guard held for 444 days as a "guest of the Ayatollahs." Michael Ledeen interviews him in three parts at PJTV starting here: Held Hostage in Iran, A Firsthand Account of the 1979 Hostage Crisis, Part 1. Here are Part 2 and Part 3, also accessible below the video.