After 9/11 they took on the additional role of terrorism deterrence.

Situations of war have given rise to opportunities for everyone to play an additional role if they desire so.

From 1993-1997, he was the running backs coach at Auburn, and took on the additional role of offensive coordinator during the 1998 season.

Hursley has had a number of additional roles in commercials and television.

The chemicals that are released by the immune system have additional roles.

Recent work has identified a number of additional roles for this protein.

However, in contrast to the current shelf life of the oil plays an additional role.

If necessary, a joint approach could play an additional role to promote networks.

He took on the additional roles of president, chief executive and chairman within the following three years.