On the morning of Saturday, April 10th, Polish President Lech Kaczynski, his wife Maria, and 94 other members of Poland's government and clergy were on a flight to Russia to mark the 70th anniversary of the Katyn massacre. Their airplane, a Polish Air Force Tupolev Tu-154M, crashed in apparently heavy fog, clipping an antenna and breaking apart in a forest less than a mile from the airfield, killing all passengers and crew. Although observances took place around the world over the weekend, Poland today begins an official week-long period of mourning for the victims. President Lech Kaczynski will be buried alongside his wife on Saturday, according to Polish state television. ( 33 photos total