(Editor's note: This story has been updated to include comments from the Air Force.) Boeing confirmed Monday to InsideDefense.com that a fuel tank erosion incident involving its first militarized KC-46 test aircraft will delay that tanker's first flight by "roughly a month." A company spokesman also confirmed that the incident, which caused damage to the aerial refueling line but not to auxiliary fuel tanks, originated with a mislabeled fuel substitute provided by a supplier. "The fuel substitute (supplied...