21.   It is a vital link in the auto supply chain.

22.   Once a remote fire is called in and manned, the lookout becomes the vital link for the fire fighters on the ground.

23.   One need not look far to find vital links between food and faith, table and altar.

24.   Replacing the elevated artery in City Square with a tunnel was one vital link in the massive effort.

25.   The bankruptcy could also stall a huge highway project including three toll roads that are projected as vital links between economically important areas of this growing county.

26.   The imagination, he often said, was a vital link between the subconscious mind and the perception of reality.

27.   The shuttle flights operated by US Airways and Delta Airlines out of Boston, New York, and Washington are a vital link for businesses in those cities.

28.   The shed, at the end of the Great Western Railway, was the vital link in his huge international communications network between Britain and the colonies.

29.   These passes are vital links for relief convoys carrying food, clothing and blankets.

30.   To illustrate, she spoke of how keeping the Sabbath holy imparts a vital link to more than three millennia of Jewish life.