An Aeroflot plane crashed in the Russian city of Perm early Sunday, reportedly killing all 88 passengers and crew on board. Witnesses reported seeing the plane hit the ground sharply, perhaps at a 30 or 40 degree angle.Investigators suspect technical failure was the cause of the crash, and reports from the ground indicate the plane's engines were on fire before the crash. One witness said it look like a burning comet racing toward the earth, followed by a massive explosion. Those killed include 21 foreigners, including one resident of the United States.