Far from being simply a dramatic device, the countdown clock serves a definite purpose ... the screen cuts to a card — ’10 seconds remaining!’ The man at the switch readies himself.

Before the tool begins, it displays a countdown timer that lets you cancel the ChkDsk, should you wish to do so. The default could be 8, 10 or 30 seconds. If you wish to change the time ...

The 28-hour journey starts the countdown clock to the return of Crew 9, which includes Butch Wilmore and Suni Williams.