51.   But as the air war over Yugoslavia continues with no end in sight, military analysts are questioning whether this two-war strategy is realistic.

52.   But analysts question how long they can last.

53.   But analysts question the size of the opportunity.

54.   But analysts questioned the results because they had not been independently confirmed.

55.   But aviation analysts questioned who should have final say on whether it is safe to land in poor weather.

56.   But even if Boeing lands new orders, analysts question whether it can ever make money for Boeing.

57.   But an industry analyst questioned whether companies would be willing to link an issue as crucial as immunity to the uncertain prospect of convincing teens to quit smoking.

58.   But analysts questioned how long he and other top Ameritech officials would stay on after the merger closes.

59.   But analysts questioned profit margins at key subsidiaries.

60.   But analysts questioned whether Intel would acquire a competing chip while the Federal Trade Commission is investigating it for alleged anti-competitive practices.