How does Wolff use allusion within the story?

When Anders recognizes the bank robber's terminology as matching that used in the Ernest Hemingway story "The Killers," Wolff is able to create multiple connections between the two stories. His inclusion of the title also encourages the reader to look up the story to which Anders is referring if they find themselves confused about Wolff's allusion. Finally, the allusion helps Wolff pay homage to a lifelong literary hero of his--Ernest Hemingway.