A characteristic of open source warfare is that core strategies and tactics can be modified by any participating group. If the modification works in practice (under the rubric of release early and often), it is then usually adopted by many other participants. In effect, mainstreamed. One recent modification that we have seen move quickly from prototype to mainstream procedure are new methods of ambushing helicopters (used successfully for the eighth on February 21st). Another, and this one is as bad if not worse than innovations in anti-air methods, is do-it-yourself (DIY) chemical weapons. These weapons involve simply blowing up truckloads of deadly chemicals. Recent events that indicate that this is on its way to mainstream activity:
- Baghdad (February 21). Chlorine gas canisters exploded near a diesel-fuel station. Killing 5 and wounding 75.
- North of Baghdad (February 20). A tanker truck of Chlorine gas exploded. Killing 9 and wounding 148.
- Ramadi (January 28). A dump truck with chlorine tank blew up. Killing 16.