People light candles at St. Nicolas Cathedral, place, where the list of submarine disaster is displayed, in St. Petersburg, Russia, Thursday, Aug. 12, 2010. Russian navy ships are flying flags at half-mast and memorial ceremonies are being held across the nation to commemorate the 10th anniversary of the Kursk nuclear submarine disaster. (AP Photo/Dmitry Lovetsky)

Photo by: Dmitry Lovetsky

People light candles at St. Nicolas Cathedral, place, where the list of submarine disaster is displayed, in St. Petersburg, Russia, Thursday, Aug. 12, 2010. Russian navy ships are flying flags at half-mast and memorial ceremonies are being held across the nation to commemorate the 10th anniversary of the Kursk nuclear submarine disaster. (AP Photo/Dmitry Lovetsky)