I have previously posted on this blog about weather modification technology and if I haven't, then please note that the Chinese government has a dedicated Weather Services Department. As for Evergreen International Aviation, I will quote from its site regarding its services and its Supertanker:
• Oil Spill Containment
• Weather Modification
• Biochemical Decontamination
The Evergreen Supertanker is not just limited to fighting fire. It will be a true utilitarian aircraft with the capability to configure to different applications on short notice. This multimission aircraft can support sensitive security and environmental missions. The aircraft’s exceptional drop capabilities, loiter time and size make it an ideal tool to perform challenging homeland security missions, able to neutralize chemical attacks on military installments or major population centers, and help control large, environmentally disastrous oil spills.
Finally, I linked the image above directly from the Evergreen Aviation website image gallery. You would think the image of three (3) planes flying in formation over New York City while spraying some unknown chemical would be directly from some conspiracy theory website and not from the official corporate website.
Source: Evergreen Aviation