CHATHAM, Mass. - Rear Adm. Daniel Neptun (left), the First Coast Guard District commander, looks at a piece of the Coast Guard Cutter Point Welcome that was damaged during an attack by friendly fire from a U.S. Air Force aircraft near the demilitarized zone in South Vietnam as he talks with retired Master Chief Petty Officer Mark "Mac" McKenney during a memorial service for Chief Petty Officer Richard Patterson at Coast Guard Station Chatham, Wednesday, June 16, 2010. Patterson was a legendary Coast Guardsman best remembered for his heroic courage under fire when the cutter was attacked August 11, 1966. Patterson succumbed to cancer on April 12th, surrounded by family and friends. Coast Guard photo by Petty Officer 3rd Class Connie Terrell.