The Jump-jet was the worlds first vertical/short take-off & landing (VSTOL) operational jet aircraft. Developed using the revolutionary Pegasus engine the Harrier has served the RAF & US Marine Corps well for over 30 years. Here vividly told is the fascinating story from the tentative hovering by the Hawker P1127 in 1960 to todays frontline Harrier GR9 & AV-8B warplanes.