1. The second spacewalk will be Wednesday and the third on March 1.
2. The two conducted a spacewalk in June, a few months after moving into the space station.
3. A third spacewalk had been slated for Christmas Day before the latest turn of events.
4. The last NASA spacewalk in January was cut short because of a small water leak in one helmet.
5. It remains to be seen if the spacewalkers need a third spacewalk to complete their repairs.