[SVTCobra03]

The Ospreys of the United States Navy.

Expensive, Vulnerable and Useless.

The Marine Corps disagrees:

http://www.marines.com/operating-forces/equipment/aircraft/mv-22-osprey

[KC_Lion]

Except the Osprey has been in development my entire life!

They rolled that out what? 1988?

The p-51 Mustang took 23 months to design, build and roll out.

[ro_dreaming]

http://www.mcclatchydc.com/2013/05/09/190817/reputation-remake-tilt-rotor-osprey.html

FWIW, the USMC seem to like it in the field.

USAF seems to have liked it here, at least.

http://www.forbes.com/sites/beltway/2011/04/04/the-much-maligned-v-22-osprey-is-confounding-critics/

It was hell to build, but it seems to be money well spent.