The US Navy has said it is pressing ahead with its manned sixth-generation F/A-XX fighter regardless of what the US Air Force does. While several manned sixth generation fighter jets are in development, the industry has no shortage of “will they or won’t they” speculation. The US Air Force’s NGAD fighter jet is generally regarded as the most advanced in its development cycle and could theoretically come into service at the end of the decade. However, there is endless speculation that the manned component of the jet may end up being canceled, with emphasis placed on manned platforms instead.