Saturn Space Hotel: The Mystery of the Missing Plans
You are interviewing General Duncan Hughes

You ask the general, "Why have you come to the conference?" You look straight at him, in the eye.
"I am interested in using the machine for the military," he says. "Would you like a glass of wine?" he asks you.
"No thank you," you say.
He opens the cupboard and drinks whisky. You watch him take three long sips. Then he starts talking about his wife and son. You guess he's drunk more than a cup of whisky.
"You are drunk," you say.
"Yes I am," answers General Duncan Hughes. "Please excuse me." He goes off to the toilet.
You walk around the lounge. You find nothing suspicious. You sit down and wait for General Duncan to come back. He eventually does.