T-90A main battle tanks passes the Red Square during the rehearsal for the Victory Day parade in Moscow, , May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi on May 9. (Xinhua/Bai Xueqi)

Su-25 fighters participate in the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

Soldiers participate in the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

Russian Defense Minister Sergey Shoigu (3-L) inspects the troops during the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

Tu-95MS bombers participate in the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

An Il-78 air tanker and a Tu-160 bomber participate in the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

Female soldiers participate in the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

Soldiers stand guard during the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)

A T-34-85 tank passes the Red Square during the rehearsal for the Victory Day parade in Moscow, Russia, May 7, 2016. Russia will mark the 71st anniversary of the victory over Nazi Germany on May 9. (Xinhua/Bai Xueqi)