NASA's Dryden Flight Research Center awarded a multi-year contract to Northrop Grumman Corp.'s Integrated Systems Division of San Diego for engineering and technical services in support of the center's planned operation of two Global Hawk aircraft. The indefinite-delivery, indefinite-quantity, sole-source contract is for a five-year period with a value not to exceed $25 million. The agreement covers the period from August 6, 2008, through August 5, 2013. The contract supports Dryden's planned operation of the two aircraft, their associated ground control station, and related systems. Technical assistance will include analysis, design support for unique systems, simulations, software development and engineering, and operational and manufacturing support as needed.