An Unmanned Aerial Vehicle, UAV, referred to as drone, which could fly non-stop for about four hours at 3000 feet has been built by four young officers of the Nigerian Air Force School of Engineers, Aircraft Design Centre, Kaduna. The Vanguard newspaper reports that four officers, all Flight Lieutenants, and who preferred to be anonymous, said the drone was a three-year effort in collaboration with Cranfield University of United Kingdom with funds from the Federal Government. The officers said that they built the drone  based on the pressing needs of the country and it can be used in pipeline monitoring, border patrol, mapping, disaster monitoring, maritime patrol, aerial surveillance and pest monitoring.