GURNEE, IL - AUGUST 13: Midwest Generation, LLC hosted its eighth annual Family Day on Saturday, August 13, 2011 at Six Flags Great America in Gurnee, Illinois. The company hosts the 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