An economist boards a plane and …

From the NYT:

… He told the agents that he had a Ph.D. in economics and marketing and had worked as an economist in Russia a long time ago, according to an F.B.I. affidavit. He said he had not slept in three days and “did not understand what was going on,” the affidavit says. … Mr. Ochigava asked for two meals during each meal service, and “at one point attempted to eat the chocolate that belonged to members of the cabin crew,” the affidavit says. One crew member said Mr. Ochigava tried to talk to other passengers, “but most of the passengers ignored him,” according to the affidavit. …