No, really, she does—though I think Master Chief may take issue with Cortana's interpretation of the events.
For more Easter eggs, ask Cortana to tell you about various elements of the Halo universe: "Tell me about" Elites, grunts, jackals, brutes, hunters, prometheans, the Librarian, Guilty Spark, and even Hamish Beamish all returns unique Cortana dialogue—though oddly, "Tell me about Sergeant Johnson" doesn't.
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