Nerve gas to the northwest and beyond.
D000413:Alaska; D001694:Biological Warfare; D002619:Chemical Warfare Agents; D002959:Civil Defense; D003666:Decontamination; D004787:Environmental Pollution / Q000517:prevention & control; D005202:Asia, Eastern; D005740:Gases; D006077:Government Agencies; D007391:International Cooperation; D007603:Jurisprudence; D007878:Legislation as Topic; D008889:Military Personnel; D009150:Mustard Compounds; D011057:Politics; D014481:United States; D014877:Water Pollution, Chemical / Q000517:prevention & control
D002619:Chemical Warfare Agents; D005740:Gases; D009150:Mustard Compounds