months both russian and american agencies have suffered devastating setbacks. you may recall in june an unmanned spacex rocket carrying a supply rocket blew up taking off from cape canaveral. that's still under investigation. a milestone tonight as the grateful dead comes alive as they say it's the last show ever under that iconic name. ♪ we will get by ♪ >> reporter: . >> for the past two nights soldier field has been rocking to the beat of the grateful dead. they drew in m 70,000 so-called dead heads easily shattering the previous report of 68,000 set by u2 back in 2009. this weekend's show is reunited the original band members 50 years after they first took the stage as the grateful dead.