I explained, "If they used shuttles, a group might organize, take over the shuttle, and use it to get up to the supply ship. Then they could escape." Granted, the Targets had done that via the space dock, but they had had to find a way to force the Barish-Estranza contact party to help them. If a bunch of desperate colonists came up in the drop box, the ship could just do a quick detach from the dock’s airlock and it would be unreachable. It wasn’t a foolproof method but it was 90 percent effective. (Foolproof is another weird word. Shouldn’t it be smartproof? It’s not like you’re going to breach and seize control of a ship attached to a space dock by tripping or forgetting to bring your weapon or something.)