the decontamination. you know, explain -- >> sure. >> okay, good. >> okay. the outside cooling loop uses ammonia as the working fluid and at very high pressure. so when they replace the broken pump module with the new one, they had to reconnect those lines, those fluid lines to reconnect the ammonia to the box, to the pump module. so they were having trouble getting those connections made, and that's when one of the connectors started leaking ammonia out. those were the white flakes you saw. of course, the liquid ammonia under high pressure comes out into the vacuum of space and turns into a solid. it freezes. so that's why you heard them calling it snow. it's snowing. it looked like snowflakes kind of coming out of that connector. now, it gets on their suits. you know, needs to be baked out to make sure you don't bring that ammonia back into the cabin inside of the international space station and release ammonia inside. that's why they're taking the extra precaution in addition to baking out in the sun to kind of sublimate that ammonia away,