Bloom and Kelly's deaths were apparently more war related than we first thought. Kelly's Humvee was trying to avoid enemy fire when it got into the accident and Bloom spent a lot of time in bad body positions that probably led to the blood clot that killed him.
http://www.washingtonpost.com/wp-dyn/articles/A43246-2003Apr6.html">http://www.washingtonpost.com/wp-dyn/articles/A43246-2003Apr6.html