This sounds like a mutiny to me — but I’ve no idea if it is true.
WMR has learned from U.S. and foreign intelligence sources that the B-52 transporting six stealth AGM-129 Advanced Cruise Missiles, each armed with a W-80-1 nuclear warhead, on August 30, were destined for the Middle East via Barksdale Air Force Base in Louisiana. However, elements of the Air Force, supported by U.S. intelligence agency personnel, successfully revealed the ultimate destination of the nuclear weapons and the mission was aborted due to internal opposition within the Air Force and U.S. Intelligence Community. Lost B-52 Nuke Missiles Were On Their Way to Middle East For Attack On Iran
Original source is the Wayne Madsen website, not known for accuracy or full disclosure (imo). Too many wolf cries, if you know what I mean.
Nevertheless, this is interesting.
Update: Michel Chossudovsky’s U.S., Nato, Israel Deploy Nukes Directed Against Iran