1.   Allison had a reputation as a number cruncher and a hands-on manager who preferred to operate behind closed doors.

2.   A young quarterback operating behind a young offensive line, throwing to young receivers in front of a new head coach.

3.   After the suspension of Lawrence Phillips, Frazier was operating behind a relatively inexperienced line with a true freshman, Ahman Green, often lining up at tailback.

4.   Brown was operating behind the second-team offensive line, which has had trouble opening holes for the running backs.

5.   But the consumer is probably oblivious to the dueling networks operating behind the scenes, because the same credit-card terminal works with all the various networks.

6.   Chinese companies less enthused about joining WTO include those in the auto, insurance and banking industries, all of which now operate behind high barriers to foreign entry.

7.   Cook has had to operate behind a line that lost two players from last season who are in the NFL and then lost more people to injuries.

8.   During the Vietnam era, they evolved into special forces units, trained to operate behind enemy lines, collect intelligence and carry out assassinations.

9.   Everett, operating behind some shaky offensive lines in Los Angeles, had got the tag that he had happy feet and was gun-shy in the pocket.

10.   He and fellow board members are counting on Eisenhower to revitalize the organization, which has operated behind the headlines for many years.