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Lathan Goumas for The Midland Daily News..Blaine Anderson and Joe Kusmierz of Wolverine Fireworks use an arial photograph to map out locations where to place mortars on Friday, June 29, 2012 in Bay City, Mich. as they prepare for the 50th Bay City Fireworks Festival. The three day festival plans on celebrating it's 50th anniversary by firing off 50,000 shells during a 50 minute period on July 7 for the finale.