would march them down to the parade route until they got to macy's and let them go. a tag attached to it, if found, call this number for a prize. >> reporter: the 14 giant balloons in the parade live here too. and i got the inside look at mr. square pants, literally. >> oh, my god! this is so cool! look at this. >> welcome to the land of 1,000 or more lines. >> this is like the matrix. look how this thing is all held up here. >> each one of those ropes is attached to various points that help pull the outside of the balloon into shape. come on out. >> reporter: wow. so much more helium than i thought. all kidding aside, the job that john and his team undertake until the big morning is that all of them, some of whom have