No matter what the circumstances, whenever there is loss of life there are two kinds of people. The bereaved, who are unconsolable, and their friends and aquaintences who would give just about anything to console them. When my father past away, I heard these words at least a hundred times: "If there's anything I/we can do, just let us know". Well, everyone knows that there is little that can be done, and the quoted sentance often ends with a few uncomfortable moments for the speaker, and a reassurance of helplessness for the listener. A very good response is: "That's good to know". Those four simple words quite effectively relieve much of the helpless feelings that each person is experiencing, and ends that uncomfortable moment with a strong feeling of inner warmth for each person.