With Excalibur effectively dead, in 1987 Teller and Wood began pitching Wood's new concept, Brilliant Pebbles. They first presented this to Abrahamson in October and followed up with a March 1988 meeting with Reagan and his aides. The new concept used a fleet of about a hundred thousand small independent rockets weighing about each to destroy the missiles or warheads by colliding with them, no explosive required. Because they were independent, attacking them would require an equally huge number of interceptors. Better yet, the entire system could be developed in a few years and would cost $10billion for a complete fleet.