Pinnacle Airlines (9E, Memphis Int'l) has renamed and rebranded itself as Endeavor Air (9E, Minneapolis/St. Paul) following the unveiling of its new headquarters at Minneapolis/St. Paul. The airline, a Delta Air Lines (DL, Atlanta Hartsfield Jackson) subsidiary will, however, continue to operate aircraft in Delta's livery. A conglomeration of three regional airlines: Pinnacle Airlines (9E, Memphis Int'l), Mesaba Airlines (XJ, Minneapolis/St. Paul) and Colgan Air (9L, Boston), Endeavor moved to Minneapolis/St. Paul from Memphis Int'l after emerging from bankruptcy. Among various cost cutting measures, Delta is phasing out Pinnacle's fleet of 140 CRJ200s owing to their alleged uneconomical fuel overheads. The airline will continue to keep its fleet of forty-one CRJ900s with Delta set to allocate it a further 40 CRJ-900s in due course.