61.   Engineers were aggressive in reducing mass.

62.   Engineers were concerned that the highwinds would cause the weakened walls to collapse, he said.

63.   Engineers were still not sure whether the obstacle had been removed, but time was running out to send more commands to Pathfinder on Friday night.

64.   Engineers were still unsure whether the ceiling could be repaired or whether the entire panel system might need to be replaced.

65.   Engineers also are developing films that monitor changes of pH, or acidity, in exhaled air.

66.   Engineers are also perfectionists.

67.   Engineers are in demand by aerospace companies, not for defense-related work but for the commercial market, Sommer said.

68.   Engineers are now installing a set of superconducting power cables beneath its streets.

69.   Engineers are still not sure what caused the communications lapse or how it was corrected.