Lockheed to upgrade USAF's F-22 jet fleet in $6.9bn contract

Lockheed to upgrade USAF's F-22 jet fleet in $6.9bn contract: The US Department of Defense (DoD) has awarded a sole source indefinite-delivery, indefinite-quantity $6.9bn acquisition contract to Lockheed Martin, to upgrade the US Air Force's (USAF) F-22 Raptor fighter jet fleet.