At least 11 people were killed last night (July 19th) when a tour boat capsized on a lake in Branson, Missouri. Five people are missing and seven other people have been hospitalized, two of them in critical condition. Stone County Sheriff Doug Rader said that it's believed stormy weather caused the duck boat to capsize on Table Rock Lake, with a severe thunderstorm warning having been issued for the area yesterday evening. Duck boats, which are able to travel both on land and in water, have been involved in other deadly tourist incidents, including one in Seattle in 2015 that killed five people and another in 1999 near Hot Springs, Arkansas, that left 13 people dead. The boats were originally used by the military during World War Two to transport troops and supplies.