BOSTON - Juliann Krogh, crewmember of the Revenue Cutter Service Historical Ship's Company discusses 18th century navigation techniques with a young boy on July 3, 2012, during OpSail festivities in Boston, Mass. HSC crewmembers consist of Coast Guard Active Duty, Reserve, and Auxiliary volunteers that educate the public about the Coast Guard's involvement during the War of 1812, as well as providing a glimpse into life at sea during the 18th century. U.S. Coast Guard photo by Petty Officer 1st Class Susan Blake.