A crowd of 75,000 people witnessed a horrifying moment at the Selfridge, Mich., Air Show on Sunday when a wingwalker, Todd Green, died after falling from 200 feet.

During a stunt, Green attempted to grab one of the helicopter's runners. As he tried to climb from a biplane to the helicopter, he lost his grip and plummeted to the ground, Mirror reported.

The accident, which happened around 1:30 p.m., Sunday, was initially thought to be a part of the stunt by many of the viewers.

Green was very good at it, colleague Kyle Franklin told AP. He said Green performed the stunt without safety equipment and was one of the two people to ever do so.

The entire Selfridge family joins together in mourning the death of Mr. Green. Our hearts reach out to those who are impacted by this tragedy, including his family, friends and our many visitors who witnessed this tragic event, said Col. Michael Thomas, 127th Wing Commander at Selfridge.

Meanwhile, the airbase is working with the Federal Aviation Administration to investigate Green's death.

Below are the photos and the video of his fatal fall.

Wingwalker Todd Green falls from John Mohr039s Steerman aircraft to his death
Wingwalker Todd Green falls from John Mohr's Steerman aircraft to his death, after losing his grip while trying to perform a transfer to the helicopter during Selfridge Air Show, less than 30 miles from Detroit, August 21, 2011. Picture taken August 21, 2011. l REUTERS/David Angel
Wingwalker Todd Green falls from John Mohr039s Steerman aircraft to his death
Wingwalker Todd Green waves from John Mohr's Steerman aircraft, before his attempt to transfer to a helicopter which resulted in him falling to his death, during Selfridge Air Show, less than 30 miles from Detroit, August 21, 2011. Picture taken August 21, 2011. REUTERS/David Angell
Wingwalker Todd Green falls from John Mohr039s Steerman aircraft to his death
Wingwalker Todd Green attempts to perform a transfer to a helicopter during Selfridge Air Show, less than 30 miles from Detroit, August 21, 2011. In another attempt following, Green fell from the aircraft to his death. Picture taken August 21, 2011. REUTERS/David Angell
Wingwalker Todd Green falls from John Mohr039s Steerman aircraft to his death
Wingwalker Todd Green (bottom) tumbles off of John Mohr's Steerman aircraft to his death, after losing his grip while trying to perform a transfer to the helicopter during Selfridge Air Show, less than 30 miles from Detroit, August 21, 2011. Picture taken August 21, 2011. R EUTERS/David Angell
Wingwalker Todd Green falls from John Mohr039s Steerman aircraft to his death
Wingwalker Todd Green falls from an aircraft after attempting to perform a transfer to a helicopter which resulted in him falling to his death, during Selfridge Air Show, less than 30 miles from Detroit, August 21, 2011. Picture taken August 21, 2011. REUTERS/David Angell
Wingwalker Todd Green falls from John Mohr039s Steerman aircraft to his death
Emergency and other personnel work on scene after wingwalker Todd Green fell from an aircraft attempting to perform a transfer to a helicopter during Selfridge Air Show, less than 30 miles from Detroit, August 21, 2011. Picture taken August 21, 2011. REUTERS/David Angell
Stunt Man Todd Green Falls 200 Feet to Death at Selfridge Air Show
Stunt Man Todd Green Falls 200 Feet to Death at Selfridge Air Show. Jeremy Mitchell / Special to T
Federal Aviation Administration Air Show Michigan Federal Aviation Administration