Northrop Grumman Corp. said Thursday it has received a 4-year, more than $250 million contract to provide logistics services for C-20 aircraft that fly high-ranking officials around the world.

Los Angeles-based Northrop Grumman will provide depot maintenance, flight line maintenance and supply services at domestic and overseas air bases for C-20s of the Air Force, Army, Navy and Marine Corps.

The jets, which are military versions of commercial Gulfstream aircraft, are used by federal officials, such as the secretaries of state and defense, and the chairman of the Joint Chiefs of Staff.

Northrop shares fell 75 cents, or 1 percent to $69.55 in mid-morning trading on the New York Stock Exchange.