A simulated improvise explosive device goes off next to a 7-ton truck part of a convoy during the Convoy Leaders Course that took place at the Battle Skills Training School June 9, 2010, aboard Camp Lejeune, NC.::r::::n::The instructors recreate scenarios where the Marines participating in the course can apply their knowledge and learn from their mistakes. - A simulated improvise explosive device goes off next to a 7-ton truck part of a convoy during the Convoy Leaders Course that took place at the Battle Skills Training School June 9, 2010, aboard Camp Lejeune, NC.::r::::n::The instructors recreate scenarios where the Marines participating in the course can apply their knowledge and learn from their mistakes.