Russian air force display teams the Russian Knights - flying Sukhoi Su-27s - and the Mikoyan MiG-29-equipped Strizhy are pictured practising together in a nine-aircraft formation at Kubinka before this month's Air Fleet Day. The teams performed loops in the nine-aircraft formation - five Su-27s and four MiG-29s - which is considered difficult using two aircraft types.

Source: Flight International