Mark Wilkerson spent eight years in the US Army as an AH-1 Cobra and UH-60 Black Hawk helicopter crew chief with the 3rd Infantry and 101st Airborne Divisions. He was deployed with the 101st to Somalia for six months in 1993. He is also the author of Who Are You: The Life of Pete Townshend and co-wrote Pearl Jam Twenty. His latest book is Tomas Young's War. Follow him on Twitter: @MarkIanWilk.