F ive furred mannies packed into a full-sized drone’s cargo bay, breathing vacuum. Bill, Garfield, Bridget and I formed the primary expedition group, and Will was running the backup manny. Once we made it into the interior of Heaven’s River, we would hide the extra manny in case of future need. We hoped we wouldn’t lose anyone in the operation and find ourselves needing the spare. If we lost two, we would probably abort and re-evaluate our entry strategy.