one of the coolant loop, as you've talked about, it is up and running today, but it's not acting quite right. they don't know if they need a computer patch to fix it or if they need a new valve. if they need a new valve, they have one up there. they have all the parts they need. but they need to get two astronauts outside and have them do a space walk to repair it. the last time they did a space walk, the astronaut almost drowned. they've been studying why they got so much moisture in the space suits. so they can do this under an emergency if they have to, but they're still looking at this, and they're hoping, as you said, that they can get it fixed with the patch. now, if they don't, and worse comes to worse, they can always evacuate the space station. >> now, the decision -- if it becomes a continuing issue, the decision to make the space walk, jay, as i understand, that's something obviously that doesn't happen overnight.