This film's opening title card reads: ''Skylark is a high altitude rocket built to carry some 150lb. of upper atmosphere research instrumentation to altitudes up to 100 miles. It is powered by a Raven solid propellant motor made by R.A.E. Westcott. The firings are carried out by the Australian Department of Supply at the Woomera Rocket Range. Skylark is being used in a joint high altitude research programme by the Royal Society and the Royal Aircraft Establishment.''