On the second day of the mission, Wang floated over to his experiment and sought to activate the Drop Dynamics Module. But it didn’t work. He asked the NASA flight controllers on the ground if he could take some time to try to troubleshoot the problem and maybe fix the experiment. But on any Shuttle mission, time is precious. Every crew member has a detailed timeline, with a long list of tasks during waking hours. The flight controllers were reluctant.
After initially being told no, Wang pressed a bit further. “Listen, I know my system very well,” he said. “Give me a shot.” Still, the flight controllers demurred. Wang grew desperate. So he said something that chilled the nerves of those in Houston watching over the safety of the crew and the Shuttle mission.
“Hey, if you guys don’t give me a chance to repair my instrument, I’m not going back,” Wang said.
…
So in the immediate aftermath, someone at NASA, probably within the crew office, initiated the capability of a commander to lock the hatch if he or she felt uncomfortable about a crew member. It was used frequently in subsequent missions involving payload specialists.
This is the lock picking lawyer and today we have a padlock on an airlock. Now, this is extremely difficult due to its location, but the lock itself is nothing more than a master lock that you can just bang on the side here, and it’s open. To show that it wasn’t a fluke…
