TICONDEROGA, N.Y. (AP) — A new exhibit at Fort Ticonderoga tells the story of the tourist attraction's historic cannon collection, considered one of the most extensive in North America. The collection of more than 180 big guns is the focus of "The Last Argument of Kings: The Art and Science of 18th-century Artillery," a two-year exhibit that opened when the fort's 2016 season began May 7. The exhibit and conservation work on some of the fort's 18th-century cannon was aided by a $150,000 grant from the U.S.