Ryan Dunn Zachary HartwellAfter a day of speculation surrounding the identity of Ryan Dunn's passenger in Monday morning's fatal crash that left both men dead, he has been identified as Zachary Hartwell, according to TMZ. Hartwell was at a Philadelphia bar, Barnaby's of America, with a group of friends, including Dunn, before taking the last ride of his life in Dunn's Porsche 911 GT3.

Hartwell, a 30-year-old stuntman, was a production assistant on 'Jackass 2' and also had a small role in Bam Margera's 2009 flick, 'Minghags.' Hartwell was pictured with Dunn and a third friend in a photograph of the group drinking and smoking late Sunday night that Dunn posted to his Tumblr just hours before his own and Hartwell's death -- the photo has since been removed.

According to Radar Online, Hartwell was also a former Navy Seal who had completed three tours in Iraq and a newlywed -- he married his wife, Rachel, in October 2010.