quality data to the Aegis ships several minutes earlier than less accurate data provided by organic radars in the Aegis or THAAD (Theater High Altitude Area Defense) systems", U.S. Army Lt. General Patrick J. O'Reilly, Director of the U.S. Missile Defense Agency, told the U.S. Senate Appropriations Committee's Defense subcommittee in prepared testimony on 25 May 2011. Timeline of STSS missile tracking tests According to Globe Newswire (sourced by Northrop Grumman) press releases, the following is a summary of the STSS Demonstration program satellites' on-orbit performance. June 2010 6 June 2010 at 22:25 UTC Ground-Based Interceptor test launched from Vandenberg Air Force Base. First STSS Object Sighting Messages (OSM) of a missile First on-board missile track formed. 16 June 2010 at 10:01 UTC ICBM Minuteman III test launched from Vandenberg Air Force Base Pre-determined target launched of Ronald Reagan Ballistic Missile Defense Test Site at Kwajalein Atoll, Marshall Islands Data transmitted at Missile Defense Integration and Operations Center (MDIOC) at Schriever Air Force Base, Colorado. First dual satellite collect of target, and First target acquisition from a target launched beyond the horizon. 29 June 2010 at 07:32 UTC Scud missile was launched from a Mobile Launch Platform (formerly USS Tripoli) near of Kauai, Hawaii Terminal High Altitude Area Defense (THAAD) missile launched from Vandenberg Air Force Base. First OSMs sent to Enterprise Sensors Laboratory at Schriever Air Force Base, Colorado, for data fusion with other sensors in real time First track of a dim theater missile. July 2010 19 July 2010 First track of a resident space object. Tracked a NOAA weather satellite on 19 July 2010 for several minutes (externally queued) 23 July 2010 First autonomous acquisition sensor to track sensor handover of a target. Hand-off demonstration occurred when STSS acquired a ground laser source operated by U.S. Air Force Research Laboratory from the Starfire Optical Range at Kirtland Air Force Base, New Mexico. August 2010 5 August 2010 First track of an aircraft Precision track sensor operation below the horizon during daylight First autonomous acquisition sensor to track sensor handover of an aircraft September 2010 1 September 2010 Airborne Laser Test Bed Exercise First autonomous acquisition sensor to track sensor handover of a boosted target 17 September 2020 at 10:02 UTC ICBM Minuteman III test launched from Vandenberg Air Force Base to Island of Guam (8500 km). First post boost track continuation of a target with track sensor