Black Sea plane crash

The Tu-154 plane with registration number RA-85572, foreground, at Chkalovsky military airport near Moscow, Russia on, Jan. 15, 2015.

A Russian woman holds a candle in memory of victims of the Defence Ministry’s Tu-154 plane crash near Sochi, Russia on Dec. 25, 2016.

Russian rescue workers carry a body from the wreckage of the crashed plane at a pier just outside Sochi, Russia on Dec. 25, 2016.

Flowers and candles are placed in memory of victims of the crashed plane in the center of Sochi, Russia on Dec. 25, 2016.

A man lays flowers at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow, on Dec. 25, 2016, after a Russian military plane which included dozens of Red Army Choir members crashed.

A woman lights at a candle at the home stage building of the Alexandrov Ensemble (The Red Army Choir), in Moscow after a Russian military plane which included dozens of Red Army Choir members crashed on Dec. 25, 2016.