Passengers heard Southwest plane window pop before it cracked, forcing an emergency landing

Cleveland • Passengers on a Southwest Airlines plane first heard a loud pop and then scurried away when they saw a jagged crack in a window that forced the jet to land in Cleveland on Wednesday.Some on board immediately thought back to just two weeks ago when a jet engine blew apart and broke a window in a deadly accident aboard another Southwest flight.“It made you nervous because something like this just happened,” said passenger Paul Upshaw of Chicago, who was about two seats