True the design is old, but the original harrier and the ones flying today are apples and oranges, the current stock are bigger and meaner/BAD ASS compaired to the 30 + old birds. There is plenty of upgrade left. Stealth is good to have, but the need for that came from the "Cold War" all stealth aircraft were designed 2-3 decades ago give or take 5 years. The threat has changed from the Big Reds (not worried about Russia,China (needs the US for them to survive) or North K.) to the lowly terrorist in a cave, bunker or clay hut. The Harrier can make quick work of those guys still. The US has lent aircraft in the past and they would most certainly do it again. The F-35 is about a decade behind scheduel. I say scrap it, move on quit wasting all that cash, but I am a just a civie now. Oh well.