the Southwest Pacific. A dozen or so bombers was the most that could be put together, owing to the small number of aircraft in the theater and the difficulties of keeping them serviceable. The results were therefore generally ineffective, and operations incurred heavy casualties. Walker objected to Kenney's suggestion that the bombers conduct attacks from low level with bombs armed with instantaneous fuses. Kenney ordered Walker to try the instantaneous fuses for a couple of months, so that data could be gained about their effectiveness; a few weeks later Kenney discovered that Walker had discontinued the use of the instantaneous fuses. In November, Kenney arranged for a demonstration attack on the SS Pruth, a ship that had sunk off Port Moresby in 1924 and was often used for target practice. After the attack Walker and Kenney took a boat out to the wreck to inspect the damage. As expected, none of the four bombs dropped had hit the stationary wreck; but the instantaneous fuses had detonated the bombs when they struck the water, and bomb fragments had torn holes in the sides of the ship. Walker reluctantly conceded the point. "Ken was okay," Kenney later recalled. "He was stubborn, over-sensitive, and a prima donna, but he worked like a dog all the time. His gang liked him a lot but he tended to get a staff of 'yes-men'. He did not like to delegate authority. I was afraid that Ken was not durable enough to last very long under the high tension of this show." In December, Kenney learned that Whitehead had been on board a B-25 in which a Japanese antiaircraft gun had blown a hole in the wing "big enough for him to jump through without touching the sides", and that Walker had flown on a B-17 that had clipped a tree and lost part of a wing. Kenney then repeated his earlier order, explaining the reasons behind it: On 9 January 1943, MacArthur issued a communiqué praising the forces under his command for the victory that had been achieved at Buna and announcing the award of the Distinguished Service Cross to twelve officers, including Walker. Rabaul 5 January 1943 On 3 January 1943, Kenney received intelligence from Allied Ultra codebreakers that the Japanese were about to attempt a reinforcement run from their main base at Rabaul to Lae, on the mainland of New Guinea. He ordered Walker