The students stood in a giant circle around a rocket and began a countdown in unison.
At first, nothing happened. One youngster, grinning from ear-to-ear, enthusiastically worked a bicycle pump.
Then, without warning, the bottle rocket leapt into the air with a hiss of water pressure. It was followed by appreciative laughter.
The missile shot high above the Carlson Elementary School playground and fifth-grade teacher Graydon Harn’s class, leaving students to watch its wild trajectory through the chilly sky.