GURNEE, IL - AUGUST 21: Midwest Generation, LLC hosted its seventh annual Family Day on Saturday, August 21, 2010 at Six Flags Great America in Gurnee, Illinois. The company sponsors a picnic with access to the amusement and water park for its employees and their families in appreciation for their work and service. Midwest Generation is owned by Edison International Inc. and is a subsidiary of Edison Mission Group. Photo credit: Randy Belice