derivative work of the following images: File:WMD_symbols_variant-2_horizontal.svg licensed with Cc-by-sa-2.5,2.0,1.0, Cc-by-sa-3.0-migrated, GFDL 2010-05-03T12:16:04Z...
WMD hazard symbols, arranged horizontally. This one uses the U.S. Army's symbol for chemical weapons, which is not necessarily internationally known....