you could call it fighting fire with fire valerie linder a part of a climate activist group that planned to use their own flying machines to tackle what they see as the scourge of air travel earlier this week they set out their plan to guide their drones into the exclusion zone of europe's busiest airport just before is opened we tell the authorities an hour before we take the action and then once we have flown the train we then call the place we've got a hotline we call the place and we wait for to be peacefully arrested basically with this footage posted online and the arrests of 2 men close to heathrow early friday morning suggest campaigners attempted to go through with their threat. heathrow has been a particular target of activists iowa because of plans to expand the airport supporters say a 3rd runway will prevent businesses being stifled by a lack of capacity and increased tourism the climate campaign is claiming to produce as much harmful carbon dioxide as the island of cyprus in terms of c o 2 bad travel is the least environmentally friendly of the mainstream forms of transport