Complex sentence: The Tiger Moth lifts off again with all hanging on to either the wings or undercarriage, just before "Skyship One" crashes to the ground and obliterates the evacuated missile base in a chain reaction.
Split into simpler sentences: The Tiger Moth lifts off again with all hanging on to the wings or undercarriage. The site beneath evacuated, "Skyship One" crashes to the ground and obliterates the base in a chain reaction.