Exobiology, 2 Treachery, and Cunning>28
or
2 Telepathy and Integrity>29
Beta Stromgren:
"They call it 'Tin Man.' ... Its energy source is unknown. The people who've studied the transmission think it's a starship. And they're sure it's alive. ... No one knows where it came from, or why it's here. But we're going to meet it. We're going to talk to it."