India to observe ICWATC operations and report back with recommendations. Similarly, Eddie Rickenbacker flew the Hump in a C-87 to reach China during his fact-finding mission to the Far East and the Soviet Union, and both he and Stratemeyer found ICW's performance seriously deficient. While ICW was carrying more tonnage by virtue of having nearly ten times as many aircraft as CNAC (and half of those with a larger load capacity), the Chinese carrier was far more efficient in tonnage lifted per aircraft, by a factor of 2.5 to 1. The primary cause of ATC's failure was the complete inadequacy of its airfield facilities, but other major factors were unsatisfactory performance by overwhelmed aircraft maintenance personnel that grounded a hundred ATC aircraft per day, a predominance of inexperienced pilots (particularly compared to those of CNAC), and a dearth of radio and navigation aids in ATC transports. Rickenbacker and Tenth Air Force commanding general Clayton L. Bissell recommended return of the operation to theater command, but Stratemeyer disagreed, as did Maj. Gen. Howard C. Davidson, who was about to replace Bissell in command of 10AF and had made an inspection tour of his own in June. Frustration at the failure of the ICW to meet the Trident goals led Arnold to dispatch another inspection team to India in September 1943, led by ATC commander Maj. Gen. Harold L. George. Accompanying George was Col. Thomas O. Hardin, an aggressive former airline executive who had already been overseas a year as head of ATC's Central African Sector. On 16 September, George immediately reassigned Hardin to command the new Eastern Sector of the ICW, to invigorate India-China operations. Alexander was replaced in command of the ICW by Brig. Gen. Earl S. Hoag on 15 October. In addition to the changes in command, George instituted the "Fireball", a weekly C-87 express flight (see External links for photo essay) by the 26th Transport Group carrying critical spare parts for the transports from the Air Service Command Depot at Fairfield, Ohio, to the ATC service depot at Agra, India. Japanese fighters based in central Burma began to challenge the transport route near Sumprabum at the end of the summer monsoon. On 13 October 1943, a large number of fighters assisted by ground observers evaded U.S. fighter patrols and shot down a C-46, a C-87, and a CNAC transport while damaging three others. Despite the doubling of U.S.