What's interesting for me was the way they got the balloon inflated in the first place. They have giant fans to blow into the balloon to start and then after it's inflated to a certain point, they point the propane igniters, I guess you'd say, into the balloon to finish the job. I don't know what the proper terminology is for what they use to propel the balloon upward, but, you will see what I'm talking about in the pictures. When I saw what they were using to inflate the balloon in the latter stages, I was thinking they had to be pretty careful where they were aiming it at, otherwise, the balloons would catch fire...hmm..wonder if that has ever happened?