Transcript for Spencer Seabrooke Attempts to Break Slacklining Record
Hang on, everybody. Heart-pounding stunt. Daredevil attempting to set a slacklining record. T.j. Holmes with the latest. Reporter: First of all, he's okay. Robin, you seemed very concerned. Set the world record or die attempting it? You're about to see moments that will make your heart stop. Imagine this, you're almost 1,000 feet off the ground, crossing between two cliffs. No safety net. Just another day at the office for Spencer Seabrook who set out to be the world's record for slacklining. Just seconds into his attempt -- he slips on the 210-foot-long slackline. Catching it with his arms to avoid falling to the ground. Slacklining, wide nylon webbing allowing to sway. S Seabrook and his pals take slacklining to new heights. Crossing gaps hundreds of feet in the air. ? ? Reporter: Before first gaining know tryty at the super bowl when Madonna came face to face with this slackliner. As for Seabrook, he regained his footing, bringing home that world record. How did he get back on?
This transcript has been automatically generated and may not be 100% accurate.