The idea for Doritos tortilla chips, which brought about a sea change in snacking and became a top seller for Frito-Lay, came from the mind of former Navy man Arch West, who died of natural causes on Sept. 20. He was 97. West joined the Navy in 1943 and served as a gunnery officer onboard destroyer escort Holt in the Pacific during World War II, according to The Dallas Morning News. A chance encounter on a family vacation inspired West to mass-market tortilla chips, according to The Washington Post: “He was on a family vacation in Southern California in 1964…