“I’m sure they were,” Bruce said. “But it’s the only booster we have that’s big enough. Which brings me to my next point: We only get one shot at this. If we fail, Mark Watney dies.” He looked around the room and let that sink in. “We do have some things going for us,” he finally said. “We have some of the parts built for the Ares 4 presupply missions. We can steal from them, and that’ll save us some time. Also, we’re sending food, which is pretty robust. Even if there’s a reentry problem and the probe impacts at high velocity, food is still food. “And we don’t need a precision landing. Watney
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