Discovery Air Inc. (Discovery Air) is a specialty aviation services company. The Company�s subsidiaries provides airborne training to the military, air ambulance services, airborne fire services, helicopter operations, fixed-wing air charter services, expediting and logistics support, and a range of maintenance, repair, overhaul, modification, engineering and certification services. The Company�s operates in two segments: Aviation and Corporate Support. The Aviation segment includes four subsidiaries Great Slave Helicopters Ltd., Great Slave Helicopters Ltd., Top Aces Inc. and Discovery Air Fire Services Inc. The Corporate Support and Other segment consist of certain support functions at Discovery Air (Corporate), as well as three operating subsidiaries. In December 2013, Discovery Air announced that its a wholly owned subsidiary, Discovery Air Defence Services Inc., acquired Advanced Training Systems International, Inc.