US Air Force F-16.US Air Force photo by Tech. Sgt. Matthew Lotz NATO members Poland and Slovakia have pledged to send Ukraine more MiG-29 jets. Ukraine is still seeking to get Western-designed jets, particularly the US-made F-16. F-16s have specific needs, and Russia could still bring them down, officials and experts say. Poland and Slovakia are sending their Soviet-designed MiG-29 fighter jets to Ukraine, promising to give Kyiv a bit of the airpower boost it has long sought.