In answer to the question of the word "Vigor" being used by a "Dream" announcer, it was first said when Kevins was doing their last drill through the guard going off the field in 1959. (Easy To Love) You can barely make it out with the crowd noise but it's there. This was the first time at the Dream and they won it.
Unfortunately Sac & Garfield were not there.
Also, check out the year 1963 for the Corps. No slouch either.
"Bugles Up" album has the 59 Corps "Dream" routine. The other Corps on the album have their 60 routines