William I. Koch International Sea Scout Cup - Chicago, Illinois. International teams invited to compete for the sailing cup. Columbia Yacht Club and Chicago Council, BSA. Big Horn Leadership Training Course - Sessions Annually in June and July Tahosa High Adventure Base, Ward, Colorado. Intense week-long youth leadership training experience sponsored by the Denver Area Council, BSA. Challenge Trophy Camporee - J. Warren Cutler Scout Reservation. Otetiana Council, BSA. Isaac Davis Trail Camporee - An historic retracing by Scouts of the trail marched by the Acton Minutemen to the battle at Concord bridge. Ex-Con - Law Enforcement EXplorer CONference - Las Vegas, Nevada. Annual conference for Explorers from different agencies who compete in law enforcement events such as crimes in progress, tactical scenarios, and obstacle courses. Northern California Annual Advancement Camp Experience - Information and registration particulars.