He also ordered the Joint Vertical Aircraft Road Map Task Force to assess the V-22 production profile alternatives against the department's overall investment in the rotary wing industrial sector and the eventual needs to replace and or refurbish aging aircraft.

CENTERFORSECURITYPOLICY: Center For Security Policy

They would carry short-take-off and vertical-landing versions of the Joint Strike Fighter, stealthy planes that are being developed jointly with America to replace the Harrier jump-jets.

ECONOMIST: Defence procurement

The previous Labour government had placed orders for two new aircraft carriers to be equipped with the F-35B variant of the American-built joint strike fighter (JSF), which is capable of short take-off and vertical landing.

BBC: Carrier fighter jet U-turn cost ?74m, says audit office