"Other excised testimony revealed a fundamental reason for the administration’s reluctance to escalate in northeast Asia: There was precious little for the United States to escalate with. American air power, in particular, was stretched very thin. Hoyt Vandenberg, the Air Force chief of staff, told the committee that Korea was already claiming a large part of America’s available air strength. “The Air Force part that is engaged in Korea is roughly 85 percent—80 to 85 percent—of the tactical capacity of the United States,” he said. “The strategic portion, which is used tactically, is roughly between one-fourth and one-fifth. The air defense forces are, I would judge, about 20 percent.”"