Detailed text transcripts for TV channel - CNN - 20171211:22:54:00
Scale, and other machinery used to convert biological agents into sprayable form. south koreans would be in the direct line of fire. a threat taken seriously enough that south korea holds mock drills for wmd attacks. but nearly 38,000 american troops in south korea could also be hit. >> a small aircraft, basically, overflying them, individual who infected infecting them. there's just no way to guarantee and protect u.s. troops from this. >> reporter: officials say there's no evidence that north korea has yet produced a biological weapon. but with the assassination of his half-brother this year...