31.   But if the spacecraft somehow drifted as far off course as the last tracking data indicated, engineers said, it could not have survived.

32.   But it also was a different time, the engineers said.

33.   But the wear and tear was reason enough for concern about other planes, several FAA engineers said.

34.   But with that debate unresolved, engineers said, the collapse remains one of the deepest mysteries their profession has faced.

35.   Consulting engineer Mountford said Gunnison worked with Ager for five years on the Josh Project.

36.   Communications engineers said court rulings have created loopholes that permit eavesdropping on portable phones and baby monitors, while outlawing surveillance of cell phones.

37.   Crews in Texas were required to work seven days a week, engineers say.

38.   Engineers said it should take about two days for Dante to retrace its steps and climb out of the crater.

39.   Engineers said the exposed parachute, still packed in its well at the base of the tail, should cause no problems upon reentry.

40.   Engineers say that transfer trusses, for most buildings, present no extraordinary hazard.