 During the same time two Cessna 337s and two DHC-5 Buffalo STOL transports were supplied in 1977 and 1978 with one DHC-5 crashing almost immediately and the other being returned to De Havilland Canada in 1979.After the Polisario Front shot down one Defender and damaged two in 1978 the Mauritanian government ordered six IA-58 Pucarás for ground attack duties from Argentina; this order was later cancelled after a Mauritanian military coup.The Air Force School was recently created in Atar.