Organizational Location: This position is with the Department of Homeland Security, within U.S. Customs and Border Protection, Office of Field Operations, Centers of Excellence & Expertise (OFO-CEE), Petroleum, Natural Gas & Minerals (PNGM) Center. Location Negotiable After Selection. Locations at one of the OFO ports can be negotiated upon selection. Locate a Port of Entry: Locate a Port of Entry | U.S. Customs and Border Protection