1.   The pilots say the walkout could last as long as two months.

2.   The union says it will keep picketers at all seven plant entrances as long as the walkout lasts.

3.   Warrell, who declined to speculate on how long the walkout might last, thinks the company-union relationship can survive the strike.

4.   When they did, walkouts never lasted long.

5.   But as in other industries, the walkouts usually last no more than a few days.

6.   The walkout lasted half a day.