By this time, LLNL was not the only group lobbying the government about space-based weapons. In 1979, Daniel O. Graham had been asked by Ronald Reagan to begin exploring the idea of missile defense, and in the years since had become a strong advocate of what was earlier known as Project BAMBI (Ballistic Missile Boost Intercept), but now updated as "Smart Rocks". This required dozens of large satellites carrying many small, relatively simple missiles which would be launched at the ICBMs and track them like a conventional heat seeking missile.