The kids got to build little paper rockets and fire them from an air compressor.
Which immediately led to having to retrieve one off a neighbor's roof.
After some directional adjustment, we got them to fly straight up. Fire in the hole!
Look up, up, up!
To give you a sense of how high the rockets were flying, here's a tree in the front yard, with people in front for scale.
Here's that same tree, with the rocket so high up that it's a tiny speck above the "H" in caption "Here is the rocket."