You may remember a post I did a long time ago about the sprint system. This is a great video of the sprint in action. Here is some basic Sprint info for you:
"This is the sprint system. It was a two stage rocket with a 1 KT Neutron bomb to take out the IRVs via explosive force and neutron flux. It worked up to 100,000 feet, and could hit more than mach 10. It was about 7,700 lbs, but took off with 650,000 lbs of thrust. Acceleration was 100 Gs."