i knew i would perform on the williamsburg bridge the minute i looked at it.s a matter of when. >> on the williamsburg bridge, ava is one of a few people with a camera on that bridge. >> a friend of mine e-mailed me the day of her performance and said come out today to the bridge. something amazing is going to happen. i brought my camera with me not really knowing what to expect. >> sharp and a fellow performer carrying a camera scale the tower in about seven minutes where she attaches her silk cloud swing 300 feet above the deck. >> the silk cloud swing is a double trapeze made out of silk. it opens so you can twist, spin side to side, back and forth. it basically gives an incredible versatility. >> once the swing is securely rigged, sharp begins her dance. >> as soon as i got there, she was sort of enrobed in the silk. that's when i started shooting. and i just thought, i'm committed to keeping the camera on her. >> i actually choreographed the scene as a duo, but at the last minute my partner decided that he didn't feel comfortable doing it. i ended up doin