[1] The narrator visits a museum exhibit where letters from unknown soldiers are displayed under glass. [2] She reads one that ends, “Tell my brother I remembered the river,” and feels a sudden, sharp recognition. [3] At home, she begins writing to her own brother, but her sentences keep collapsing into fragments. [4] She finally writes only: “I remember.” Then she seals the envelope without an address and places it in a drawer. [5] “Some messages,” she thinks, “are practice for saying what we can’t yet send.”