What is the Harrier jet aircraft's most distinctive feature?

The Harrier jet is most famous for its unique vertical/short takeoff and landing (V/STOL) capabilities, allowing it to operate without conventional runways.

Which countries primarily developed and operated the Harrier Jump Jet?

The Harrier was primarily developed in Britain and famously operated by the Royal Air Force, Royal Navy, and the United States Marine Corps.

Is the Harrier jet still actively used by military forces?

Most Harrier variants have been retired from front-line military service, largely succeeded by newer aircraft like the F-35B Lightning II, which also features V/STOL capabilities.

What other meanings does the word 'Harrier' have?

Beyond the aircraft, 'Harrier' also refers to a medium-sized dog breed, a type of bird of prey, and traditionally, a cross-country runner.