kb/data/en.wikipedia.org/wiki/Brilliant_Pebbles-5.md

title	chunk	source	category	tags	date_saved	instance
Brilliant Pebbles	6/9	https://en.wikipedia.org/wiki/Brilliant_Pebbles	reference	science, encyclopedia	2026-05-05T13:24:19.440513+00:00	kb-cron

I have directed that the SDI program be refocused on providing protection from limited ballistic missile strikes – whatever their source. Let us pursue an SDI program that can deal with any future threat to the United States, to our forces overseas, and to our friends and allies. This change in posture meant the system no longer had to deal with a large-scale attack, only small ones. Once again the number of pebbles was reduced, this time to between 750 and 1,000.

=== Missile Defense Act of 1991 ===

The new GPALS concept was fully described in a May 1991 report published by the SDIO. It consisted of four parts: a ground-based missile system to protect the United States, a ground- and sea-based system to defend overseas United States forces and allies, Brilliant Pebbles in space, and a command and control system tying them all together. Brilliant Pebbles was seen as both a system for providing early detection of launches, as well as being able to attack any missile with a range greater than 600 kilometers (370 mi). With the deployable system finally specified, the next step was to go to Congress for funding. This led to the Missile Defense Act of 1991. From one perspective, the Missile Defense Act was a victory for SDI as it considered making changes to the Anti-Ballistic Missile Treaty that would allow deployment, and ordered "robust funding" for Brilliant Pebbles. But it also stated that the immediate goal was to produce a Limited Defense System by 1996 what would be fully compliant with the Treaty, meaning it could have a maximum of 100 ground-based interceptors and they had to be in the vicinity of Grand Forks Air Force Base. It was specifically stated that Brilliant Pebbles would not be part of this initial system. Although there was some concern about the Missile Defense Act, many considered it to be the best deal that could be made. Cooper essentially ignored the anti-Pebbles sentiment of the Missile Defense Act, and maintained its place as the primary weapon within the GPALS system. With funding secured, in June 1991 the SDIO sent out development contracts for Brilliant Pebbles and Brilliant Eyes to Martin Marietta and TRW. Brilliant Eyes was a low-orbit detection platform to aid Pebbles and the ground-based missiles. Additional contracts for the ground-based missiles and interceptors went out at the same time. This marked the first time since the Safeguard program of the 1960s that a production of a ballistic missile defense system was funded, and the first for SDI. On 9 April 1992, Cooper testified before the Subcommittee on Strategic Forces of the Senate Armed Services Committee, where he was questioned by Democrats in the group. Sam Nunn, chairman of the Armed Services Committee, arrived late and then essentially took over the meeting. He noted that the complaints that SDIO was not being provided with the required funding was largely their problem, because Cooper was directing too much funding towards Pebbles, which would not be ready by 1996. He stated:

So, it is my assertion, Mr. Ambassador – which you can rebut – that what you've done by a combination of funding, and the reduction in GSTS, is, you made sure that Grand Forks would not be effective if we did it during this decade. Therefore, you made it almost impossible for it to happen during this decade. I don't know the motive for that, but that's what it looks like to me. In defending his priorities, Cooper stated that the budget for these items was actually within the guidelines laid out the year before, about 11% for Pebbles and 14% for the other components of the space-based portion. He went on to suggest that the 1996 date was unrealistic and that setting priorities to make it happen would not help. Seeing the implied threat to the program, Cooper soon moved $2 billion out of Pebbles into the ground-based systems. Nunn reiterated his attack on Pebbles in August, at which point Secretary of Defense Dick Cheney stepped in and threatened that if the attacks continued that the president might veto the entire bill. His position was undermined by the failure of the third Pebbles test on 22 October 1992, when the booster broke up shortly after liftoff. The final language for the 1992 version of the bill contained Nunn's language on the focus towards the Limited Defense System. It firmed up language that stated that the deployed system would have to be fully compliant with the ABM Treaty, and reduced funding for the space-based portions from $465 million in the 1991 version to $300 million. Further, the wording that the system should be deployed as rapidly as possible was dropped. In November 1992, SDIO was forced to remove Pebbles from the deployment contracts, sending it back to a research program. On 18 December 1992, program management was transferred to the Air Force's Space and Missile Systems Center, and the January 1993 contracts were for "advanced technology demonstration" as opposed to a pre-production system.

=== Cancellation === Shortly after Bill Clinton became president in 1993, his new Secretary of Defense, Les Aspin, immediately began downgrading the Pebbles system. On 2 February 1993, he issued budget guidance lowering its budget from $100 million to $75 million, and moving it to the "follow on technology" category. In March 1993, it was renamed the Advanced Interceptor Technology Program. On 1 May 1993, the SDIO became the Ballistic Missile Defense Organization (BMDO), reflecting the administration's shift towards the theatre ballistic missile problem. On 1 December 1993, James D. Carlson, its acting deputy director, ordered a stop work on the program. This was part of significant budget rollbacks to the entire program, limiting the organization to work on a single kill-vehicle. Brilliant Pebbles was dead. In August 1994, the Ballistic Missile Defense Organization was reoriented to a single Boost Phase Interceptor program.

== Description ==