Chinese company EHang has announced another that it has passed a technical evaluation of its EH216F AAV (Autonomous Aerial Vehicle), a drone built for firefighting. The idea of using drones for firefighting has a key benefit: Drones can reach heights that ladders and hoses cannot. A number of companies have been testing out smaller prototypes, but they have limited payload capacity. While a single EHang EH216F won’t extinguish a towering inferno, it clearly has greater capabilities than the other drones in this space.