A suspected Muslim extremist shot and killed three American missionaries and wounded a fourth at a hospital in Yemen. news_yemen_missionaries.jpg home Missionaries Killed superpass.gif http://abcnews.go.com/sections/world/videofiles/Video/021230yemen_video.ram 10404939272570 ABCNEWS (Members) lock_icon.gif video.gif http://news.bbc.co.uk/media/video/38639000/rm/_38639209_yemen13_adams_vi.ram 10404939272571 BBC News lock_icon.gif lock_icon.gif big_headline