For reasons that the police say are still unclear, the two groups exchanged words.
The group exchanged surprised glances, caught off guard by the question.
As they drove home, the group exchanged views on the mystery.
Detectives believe that two groups of men exchanged more than a dozen shots across the street in a running gun battle.
The group exchanged sober looks, and even Burgess was beginning to appear convinced.
The group exchanged more puzzled looks and seemed buoyed by the hope that this would be over soon.
The two groups exchanged fire in the growing darkness.
Ehrenberg's small group exchanged fire with forces on the other side of the street.
Our group had exchanged emails before we set off, so I knew some of them would be on the same boat.
