1.   A walkout could cause a shortage of starter motors used on almost every GM car and truck.

2.   The walkout has caused parts shortages that have begun to force U.S. assembly plant closings.

3.   The walkout caused Ford Motor Co. to run out of seats and halt production of some of its hottest-selling models.

4.   Such a walkout could cause severe disruptions in Czech hospitals, where about half the doctors are on the state payroll.

5.   The walkout will not cause any flight cancellations because higher-ranking senior pilots will replace the striking pilots for all scheduled flights for Tuesday, they said.