Parachutist undergoes surgery to relieve pressure on his brain after accident at Air & Water Show

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CHICAGO -- The Army Golden Knights and Navy Leap Frogs have canceled parachute performances scheduled for day two of Chicago's Air & Water Show after an accident during Saturday's show.

One of the two parachutists who was injured in the accident has undergone surgery to relieve pressure on his brain.

The incident happened around 10:30 a.m. Saturday, just about 30 minutes after the Air & Water Show kicked off.

A photo was snapped moments before one of the parachutist crashed into a high-rise.

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Photo captures parachutist moments before hitting the high-rise during Chicago's Air & Water Show

Witnesses say the Army Golden Knights performer had a problem with his parachute.

"One of the Golden Knights, his parachute didn't open, he had to use his emergency parachute, he landed way out in the city," said Gwen O'Brien, witness.

He hit a building near the corner of Schiller Street and Lake Shore Drive in Gold Coast.

He was transported to Northwestern Hospital where he underwent surgery to relieve pressure on his brain, according to Army officials. He is listed in critical condition.

An Army Golden Knights Team and Chicago police investigators looked for clues as to what went wrong, inspecting the white emergency parachute bunched on the pavement.

Witnesses at the Air & Water Show said he may have collided with another performer from The Navy Leap Frogs who suffered a hard landing on the sand at North Avenue Beach.

The unnamed Navy Leap Frogs performer was also transferred to Northwestern Hospital. He suffered a broken leg.

Video captured from the scene at North Avenue Beach shows the parachutist holding up a 'hang ten' to everyone on the beach as he was escorted away.