Aeroshell acrobatic team performs during the Chicago Air and Water Show on the Michigan lake, north of Chicago, Aug. 18, 2012. The two-day Chicago Air and Water Show, opened on Saturday, is the largest free show of its kind in the United States. (Xinhua/Jiang Xintong)
A member of the U.S. Army Parachute Team Golden Knights performs during the Chicago Air and Water Show on the Michigan lake, north of Chicago, Aug. 18, 2012. The two-day Chicago Air and Water Show, opened on Saturday, is the largest free show of its kind in the United States. (Xinhua/Jiang Xintong)
Spectators view the air show during the Chicago Air and Water Show on the Michigan lake, north of Chicago, Aug. 18, 2012. The two-day Chicago Air and Water Show, opened on Saturday, is the largest free show of its kind in the United States. (Xinhua/Jiang Xintong)