Yesterday, the Office of Emergency Management sent out an alert: "The Port Authority of NY/NJ will be conducting an evacuation drill at the World Trade Center excavation site on Wednesday June 30th at approximately 9:15 PM. You may hear a loud tone and verbal alert in the vicinity of the PATH Station and Mezzanine area at the time of the drill." Last year, the OEM, NYPD, FDNY, Port Authority, and other agencies had an emergency rescue drill at the WTC PATH station, complete with "injured passengers."