ABC News' Erin Mizraki reports:
While most visitors to the Grand Canyon Skywalk get to enjoy the view safely from behind the rails, rope access technicians dangled off the glass-paneled walkway 4,700 feet from the ground on Tuesday as the sky bridge received its spring cleaning.
Abseilon USA has released breathtaking photos courtesy of Vidcie depicting the event that was described by some spectators as "awe-inspiring."
There were said to be no nerves, however, for the technicians, who, according to Kenneth Piposar, the vice president of Abseilon USA, were anxious to get out there.
"It's really a dream for these guys and their career," Piposar said. "It's a one in a million opportunity and to say you've been under the Skywalk is not something many people can say."
The skilled technicians have trained for thousands of hours learning the safety precautions for such a risky, yet highly coveted job.
The Skywalk presented more of a challenge than normal repels for the technicians, who are not used to being carefully watched by dozens of tourists.
At nearly 21 knots, the wind posed another obstacle as the technicians were periodically hit with large dust storms.
It required 5,000 feet of rope and six technicians to both rig and clean the horseshoe shaped bridge as spectators watched from above.