confined to the Urakami Valley. As a consequence, a major portion of the city was protected by the intervening hills, and only 60% of Nagasaki was destroyed. The bombing also severed the Mitsubishi arms production extensively and killed an estimated 35,000–40,000 people outright, including 23,200–28,200 Japanese industrial workers, 2,000 Korean slave laborers, and 150 Japanese soldiers. Low on fuel, Bockscar barely made it to the runway on Okinawa. With only enough fuel for one landing attempt, Sweeney brought Bockscar in fast and hard, ordering every available distress flare on board to be fired as he did so. The number two engine died from fuel starvation as Bockscar began its final approach. Touching the runway hard, the heavy B-29 slewed left and towards a row of parked B-24 bombers before the pilots managed to regain control. With both pilots standing on the brakes, Sweeney made a swerving 90-degree turn at the end of the runway to avoid going over the cliff into the ocean. 2nd Lt. Jacob Beser recalled that at this point, two engines had died from fuel exhaustion, while "the centrifugal force resulting from the turn was almost enough to put us through the side of the airplane." After Bockscar returned to Tinian, Tibbets recorded that he was faced with the dilemma of considering “if any action should be taken against the airplane commander, Charles Sweeney, for failure to command.” After meeting on Guam with Tibbets and Sweeney, General Curtis LeMay, chief of staff for the Strategic Air Forces, confronted Sweeney, stating, "You fucked up, didn't you, Chuck?", to which Sweeney made no reply. LeMay then turned to Tibbets and told him that an investigation into Sweeney's conduct of the mission would serve no useful purpose. In November 1945, Sweeney returned with the 509th Composite Group to Roswell Army Air Base in New Mexico to train aircrews for the atomic testing mission, Operation Crossroads. Post-war activities Sweeney left active duty with the rank of lieutenant colonel on June 28, 1946, but remained active with the Massachusetts Air National Guard. Later promoted to full colonel, on February 21, 1956, Sweeney was named commander of its 102nd Air Defense Wing and shortly after, on April 6, was promoted to brigadier general. During this time, he was activated with the 102nd and served in Europe during the Berlin Crisis from October 1961 to August 1962. Sweeney was made chief of staff in