11.   When engineers determined that the device was working properly, the countdown continued.

12.   Engineers are still determining how to fix it.

13.   Endeavour is bringing the original backup to Earth so engineers can determine what went wrong.

14.   Everything was turned back on after Russian engineers determined the supply ship was attached securely enough for the steering system to operate.

15.   He said engineers will later determine whether it can be used at the station.

16.   Structural engineers have not determined to what extent the speed of the planes affected how long the buildings stood.

17.   The launch of space shuttle Columbia will be delayed until engineers determine the cause of minuscule cracks found on two other shuttles, the U.S. space agency said.

18.   The truck will not be removed until engineers determine if the removal would be safe, he said.

19.   But engineers later determined that what Barril found was in fact antenna equipment, not the black box.

20.   But engineers later determined that what Barril has found was in fact antenna equipment, not the black box.