"Weather modification will continue to be explored. The aims are to obtain more water, reduce hail damage, eliminate fog, or other similar practical result in response to a recognised need. Manipulation of the weather may affect changes in operating conditions, limit aviation flight envelopes, generate poor visibility while providing concealment and disrupt lines of communications. Weather modification may also affect morale." Global Strategic Trends out to 2040 page 156 The 4th edition of Global Strategic Trends, published by the Development, Concepts and Doctrine Centre (DCDC). https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/33717/GST4_v9_Feb10.pdf