3-2-1 Blast Off, sponsored by Heritage Sandy Springs as part of its Movin’ Groovin’ Mornings series, showed kids a little bit about the high-flying science of rocketry. Above, Jason Harvey, 8, takes a vigorously two-footed approach to activating his launch pad. At left, Reese Peddle, 4, shows she also can go ballistic with the best of them.