The Lyle Gun, a historic line gun used to save passengers of shipwrecks, is fired over Lake Superior during the annual firing of the gun to celebrate the anniversary of the U.S. Coast Guard hosted by the Marquette Martime Museum Sunday, Aug. 4. (Journal photo by Amy Grigas)

Left: The Lyle gun, a historic line gun used to save passengers of shipwrecks, is fired over Lake Superior during the annual firing of the gun to celebrate the anniversary of the U.S. Coast Guard. The event, which took place Sunday, was hosted by the Marquette Martime Museum. Right: Scott Porter, a member of the Marquette Maritime Museum board, shows event attendees the mechanics of the Lyle gun before firing it while a member of the U.S. Coast Guard looks on. (Journal photos by Amy Grigas)