Very cool, love combo of Acrobat & Love is Blindness at the end of Achtung Baby.Edge can do that too.
This Rig Rundown reminded me of an experience I had several years back. I used to work for a private Apple computer-specialized service company, and I got work U2's 360 tour at Soldier Field to setup some new office computers. While working, one of their crew that I chatted up during lunch pulled me aside and said "you gotta check this out"....then proceeded to walk me to the middle of Soldier Field while the band sound checked "One" (they transitioned in from another newer song at the time). All the stands were empty and there were maybe ~10 people on the field total. When they finished the song there was absolute silence in the stadium; it was a totally surreal moment and one that I'll never forget.
Got to see the full show later, and yes, it was pretty incredible. The Edge is legit.