The Coast Guard found a body strapped into a flotation device Wednesday as part of its search operations for a Florida father and his three teenage children who have been missing in the Gulf of Mexico. They were unable to confirm, however, if it is a member of that family. The family was last seen Sunday en route to Fort Myers. The children are 13, 15, and 17 years old. The Coast Guard previously found “personal items” believed to belong to the family.