Nearly 5 million people visited the Grand Canyon last year, from day trippers and campers to people sleeping overnight in historic lodges and cabins.

But many elderly people do not. Each year, choking claims the lives of more than 4,100 Americans who are 65 or older. It's the most vulnerable age group, accounting for about three-quarters of U.S.

Officials say nine people died in a fire at an assisted living facility in Fall River, Massachusetts, where people were ...