 With nearly six years of Air Force experience, Zuckert was better prepared for and more knowledgeable about the secretariat and its organization than any previous appointee.Zuckert was involved in controversies associated with the XB-70, AGM-48 Skybolt, and the TFX (later the F-111) weapon systems, and with direct participation in the war in Vietnam.Both he and Air Force Chief of Staff General Thomas D. White opposed the administration's decision to cut the XB-70 bomber.