Three Senators are pushing for the Government Accountability Office to investigate continued KC-46 tanker delays and review the status of prime contractor Boeing's work to address current deficiencies with the aircraft. In a new letter to U.S. Comptroller General Gene Dorado , Sens. Maggie Hassan (D-NH), Jeanne Shaheen (D-NH) and James Lankford (R-OK) express concerns that the remaining deficiencies and the delayed initial operational capability timelines are having a significant impact on refueling operations. Hassan, who led the effort, serves...