'I always hear them before I see them': Drones strike fear in Colombia

'Hear them before I see them': How drones strike fear in Colombia Increasingly, armed groups in Colombia are turning to cheap, widely available drones to fight from a distance. What is the toll on civilians? Military surveillance drones fly in formation past an air traffic control tower in Colombia [Courtesy of Colombia's Batallon de Aeronaves No Tripuladas] Military surveillance drones fly in formation past an air traffic control tower in Colombia [Courtesy of Colombia's Batallon de Aeronaves No Tripuladas] She instinctively reaches for her young son. The noise always emerges from a small mountain behind her home, part of a tree-quilted landscape stitched with winding rivers along Colombia's border with Venezuela. I always hear them before I see them, if I see them at all, she says.