Original sentence: Born in Koudinovo, Moscow oblast, Vladimir Mikhailov was educated at a local Machinery vocational school (1962), Yeysk Higher School of Pilots (gold degree, 1966), extramural courses at Gagarin Air Force Academy(1975)
Edited sentence: Born in Koudinovo, Moscow oblast, Vladimir Mikhailov was educated at a local Machinery vocational school (1962), Yeysk Higher School of Pilots (gold degree, 1966), in 1966-1975 served in Taganrog-based air force regiment,  extramural courses at Gagarin Air Force Academy(1975)