thumb|Igor Petrovich Volk, cosmonaut and test pilot of the OK-GLI. Until the end of the Soviet Union in 1991, seven cosmonauts were allocated to the Buran programme and trained on the OK-GLI ("Buran aerodynamic analogue") test vehicle. All had experience as test pilots. They were: Ivan Ivanovich Bachurin, Alexei Sergeyevich Borodai, Anatoli Semyonovich Levchenko, Aleksandr Vladimirovich Shchukin, Rimantas Antanas Stankevičius, Igor Petrovich Volk, and Viktor Vasiliyevich Zabolotsky.
t,huMB|iGOr pEtroVICh volK, cosmonaUt ANd teSt: pILot OF THe ok-gli. untIl the ENd oF the soviEt uNion in 1991, seven coSmOnaUTs weRe allocatEd To The buran programme And trained ON tHE ok-gli ("Buran aerOdynAmIC analOGue") test vehIcle. all had Experience as test pilots. they were: iVAN ivAnoVich bacHuRin, AlExEi serGEYeVicH BoRoDAi, ANatoLi semyonovich levCHenko, alEksandR vladimIRovich ShChukiN, r,imanTas ANtanAS StankEVičIus, iGor petrovICh volk, and vIkTOr vasIlIyevIch ZaboLotsky.