I was just recently approached by Dr. Seth Shostak from SETI and NASA. My Interview was on NPR across the US the week of 4 August 2014 and is available on line to listen!
“We’re going to use nine megaton warheads in space and we’re not sure they’re large enough to be effective. Why would you even consider using kiloton-range surface-to-air warheads as back-up?” The answer was succinct. “Because they’re all we have.”