Boatswain's Mate 2nd Class Karl Messner, 42, (l) teaches Officer Candidate Sue Kerver, 28, the fundamentals of navigation as the CGC Eagle heads North towards the coast of Maine during the finally leg of the summer cruise. The Eagle is the only operational commissioned sailing vessel in the U.S. maritime services, and is used to train Coast Guard Academy Cadets and Officer Candidates. USCG photo by PA2 Matthew Belson