"Yes, these are both Lawrence when he was in the service." Grandmother has always had this knack for telling people the obvious in a way that is scrupulously polite but that makes the recipient feel like a butthead for having wasted her time. By this point she is obviously tired of IDing photographs, a tedious job with an obvious subtext of "you’re going to die soon and we were curious—who is this lady standing next to the Buick?"