DENVER, CO -- Out of the more than 10,000 plus pilots at United Airlines, only two are Harlan natives. On February 11, Captain Kerry Boltinghouse and First Officer Lisa (Petersen) Christensen operated a Boeing 737 on United Flight #1727 from Denver, CO to Tucson, AZ, and Flight #1138 back to Denver. This would have never been possible if it was not for the merger between Continental and United Airlines in 2010.