"[2] LE ensures Assured Access to Space for the Department of Defense through the Evolved Expendable Launch Vehicle (EELV) program.

The Delta II entered the Air Force inventory in February 1987 after the Air Force awarded a contract to McDonnell Douglas for the construction of 18 Delta IIs to launch NAVSTAR Global Positioning System (GPS) satellites, which were originally programmed for Space Shuttle launch.

EELV's operability improvements over current systems include a standard payload interface and increased off-pad processing.

LTRS consists of ground-based surveillance, navigation, flight operations and analysis, command and control, communications and weather assets located at the Eastern Range (Patrick AFB, FL.

LE, located at the Space and Missile Systems Center at Los Angeles Air Force Base, CA, is home to than 540 government, military, aerospace, and contractor personnel.