New Terror Alert Chemical attacks and underwater assault feared. news_anthrax_rts.jpg l video.gif ABCNEWS http://play.rbn.com/?url=realone/abcnews/open/g2demand/020610ross.rm&rpcontexturl=abcnews.go.com/webcasts/realone/topnews_frameset.html&rpurl=abcnews.go.com/wire/US/reuters20020609_159.html#realone http://play.rbn.com/?url=realone/abcnews/open/g2demand/020610ross.rm&rpcontexturl=abcnews.go.com/webcasts/realone/topnews_frameset.html&rpurl=abcnews.go.com/wire/US/reuters20020609_159.html#realone PLAY headline