He choked back his emotions, forced his mind to put a wall around his memories of the battle. That wall held as he showed his documents to the sentries in the lobby of his apartment building, and when he rode the birdcage past the Waffen-SS soldiers on the fifth floor, and as he dug in his pocket for his keys. When he opened the apartment door, he thought he’d step inside an empty apartment, fall to the floor, and let it all go.