With nerves running high after the December 25 incident of a Nigerian man allegedly trying to set off an explosive on Northwest Airlines Flight 253 from Amsterdam to Detroit, the flight crew of today's NWA Flight 253 asked for emergency help because of a disruptive Nigerian passenger, an incident the Department of Homeland Security later characterized as "nonserious." The Detroit Free-Press reports, "A law enforcement official says the man removed from a flight to Detroit today posed no security risk to the plane. The official says the passenger was taken into custody after becoming verbally disruptive on landing. Subsequent interviews by investigators determined he was a businessman who became ill during the flight." (CNN said the passenger had locked himself in the lavatory for an hour.)