Air Force Space Command's SBIRS Wing at the Space and Missile Systems Center, Los Angeles AFB, California is responsible for development and acquisition of the satellites.

The Space-Based Infrared System ( SBIRS ) is a consolidated system intended to meet the United States ' infrared space surveillance needs through the first two to three decades of the 21st century.

The SBIRS program is designed to provide key capabilities in the areas of missile warning, missile defense and battlespace characterization.

SBIRS is an integrated " system of systems " that will include satellites in geosynchronous orbit ( GEO ), sensors hosted on satellites in highly elliptical orbit ( HEO ), and ground-based data processing and control.

SBIRS is to use more sophisticated infrared technologies than the DSP to enhance the detection of strategic and theater ballistic missile launches and the performance of the missile-tracking function.

SBIRS High ( also now simply referred to as " SBIRS ") is to consist of four dedicated satellites operating in geosynchronous earth orbit, and sensors on two host satellites operating in a highly elliptical orbit.

SBIRS High will replace the Defense Support Program satellites and is intended primarily to provide enhanced strategic and theater ballistic missile warning capabilities.

The prime contractor for SBIRS is Lockheed Martin, with Northrop Grumman as the major subcontractor.

The SBIRS Low contract is now managed by the Missile Defense Agency ( MDA ) and has been subsequently renamed to the Space Tracking and Surveillance System ( STSS ).

The SBIRS Low program was originally expected to consist of about 24 satellites in low earth orbit.

DSP satellites will be replaced by the Space-Based Infrared System ( SBIRS ) satellites.

SBIRS Low's original deployment schedule was 2010, the date when its capabilities were said to be needed by the National Missile Defense System.

The first GEO satellite of the SBIRS program, GEO-1, was successfully launched from Cape Canaveral on an Atlas V rocket on May 7, 2011.

In summary, as of June 2012, a total of 6 satellites carrying SBIRS or STSS payloads have been launched: GEO-1 ( USA-230, 2011 ), HEO-1 ( USA-184, 2006 ), HEO-2 ( USA-200, 2008 ), STSS-ATRR ( USA-205, 2009 ), STSS Demo 1 ( USA-208, 2009 ) and STSS Demo 2 ( USA-209, 2009 ).

SBIRS High GEO 1 was launched on May 7, 2011.

Two SBIRS sensors hosted on two classified satellites in highly elliptical orbit have already been launched, probably as part of the NROL-22 ( USA 184 ) and NROL-28 ( USA 200 ) launches in 2006 and 2008.

The project was originally to have had a life of 25 satellites, but the last two have been canceled, mainly due to SBIRS.

Configuration of SBIRS systems: GEO, HEO and Low components.

A complement of satellites in low earth orbit was planned as part of the program ( SBIRS Low ), but this has been moved into the STSS program.

SBIRS ground software integrates infrared sensor programs of the U. S. Air Force ( USAF ) with new IR sensors.

SBIRS continues to struggle with cost overruns, with Nunn-McCurdy breaches occurring in 2001 and 2005.

In December 2005, following the third SBIRS Nunn-McCurdy violation, the government decided to compete GEO 4 and 5, with an option to buy the GEO 3 contingent based on the performance of the first two.

Additionally, the government started a potential SBIRS High replacement program, writing out proposals in June 2006.

Lockheed Martin also provides the satellite for SBIRS GEO.

Presumably a cocktail party is expected to fulfill the host's desire to get together a number of people who are inadequately acquainted and thereby arrange for bringing the level of acquaintance up to adequacy for future cooperative endeavors.

In his effort to stir the public from its lethargy, Steele goes so far as to list Catholic atrocities of the sort to be expected in the event of a Stuart Restoration, and, with rousing rhetoric, he asserts that the only preservation from these `` Terrours '' is to be found in the laws he has so tediously cited.

In conformance with the maximization principle we affirm that Gentile-Jewish relations will be harmonious or inharmonious to the degree that one relation or the other is expected by the active participants to yield the greatest net advantage, taking all value outcomes and effects into consideration.

It is difficult to say what Thompson expected would come of their relationship, which had begun so soon after his emotions had been stirred by Maggie Brien, but when Katie wrote on April 11, 1900, to tell him that she was to be married to the Rev. Godfrey Burr, the vicar of Rushall in Staffordshire, the news evidently helped to deepen his discouragement over the failure of his hopes for a new volume of verse.

It is not something that can be expected to happen now.

Since Laos is of no more purely military value to Moscow itself than it is to Washington, this approach might be expected to head off Mr. Khrushchev for the moment.

The House communications subcommittee is expected to report out a good bill calling for the states to match federal funds.

His visit to Warsaw, Poland, after the Russian journey in the summer of 1959 was expected to win the Polish vote which, in several cities, is substantial.

Now he is apparently expected to give up his evenings -- and Sundays, too, for this is coming.

If the Department of State is to take primary responsibility for foreign policy in Washington, it follows that the ambassador is expected to take charge overseas.

He is expected to know about what is going on among the representatives of other agencies who are stationed in his country.

He is expected to supervise, to encourage, to direct, to assist in any way he can.

A certain skepticism about the coming of Americans is to be expected in many quarters.

This use is expected to increase to about 50 million visits by 1972.

The long-range objective of this Department is to provide and maintain a system of forest development roads and trails which will adequately service the National Forest System at the levels needed to meet expected needs and optimum production of products and services.

It is expected that in 1963 two prototype aircraft will be available for flight testing.

Research, development test and evaluation funds, devoted to missiles in 1960 were 3 to 4 times as large as those devoted to aircraft, and actual missile procurement is expected to exceed aircraft procurement by 1963.

He knows your signals, what is expected of him and the way the Class is conducted, right up through the flash-bulbs of the photographers ''.

Miss Demon Abbe, p, 1:59.3 has trotted in 2:26, and is expected to race at this gait ; ;

The observed intensity of the radio emission of Venus is much higher than the expected thermal intensity, although the spectrum indicated by measurements at wave lengths near 3 cm and 10 cm is like that of a black body at about 600-degrees.