 Complete the following phrase:  In mid-1984, Libyan military aid brought eight Mikoyan-Gurevich MiG-21 jet fighters, along with two MiG-21U combat trainer versions. These ex-Libyan Air Force MiG-21 Fishbed fighters were based in Ouagadougou, although they were actually operated by the Libyan Air Force on loan by Libya, and were removed in 1985 without seeing combat. A single MiG-17F Fresco that was also operated by the FABF did see combat service in the 