31.   As it happens, the heat-sensing devices will work with increasing efficiency as cold weather tightens its grip in the region.

32.   BellSouth Corp. plans to tighten its grip on the Peruvian communications company in which it invested two years ago.

33.   A cold Canadian air mass will tighten its grip on the northern Rockies and northern Plains on Saturday.

34.   A new generation of mafiosi is tightening its grip once more around Italy.

35.   Across Chechnya, Russian troops tried on Thursday to tighten their grip over the breakaway republic, in the throes of its second war in a decade.

36.   After looking in every possible direction, he would tighten his grip and guide me, step by step.

37.   All that remained was for Seles to tighten her grip in the second set and then grip the microphone at the awards ceremony.

38.   Brian Hawk dropped down on Pit Stop in the narrow chute at the Calgary Stampede Rodeo and tightened his grip on the bronc.

39.   But more must go into running the Jets than tightening a grip.

40.   But on both sides, violence and extremism appeared to be tightening their grip.