But, underneath her cool demeanor, friends say she has a wicked sense of humor.
"He is an intense competitor, yet plays with a very cool demeanor," the report continued.
But soon, his cool demeanor proved just what was needed.
The general's head shot up at his distress, and his cool demeanor slipped, but only for a second.
By 10 minutes after midnight, her cool demeanor began to disappear.
His voice rose as his anger broke the cool demeanor he usually kept.
His cool public demeanor is a reflection of his legal background.
Saw beyond the cool demeanor to the woman who lived inside.
On a recent flight around Manhattan he demonstrated the kind of cool demeanor needed to survive life in the corridor.
How much of his cool demeanor was a ploy?