Because this is the US Chair Force, and someone with nothing to do before his afternoon tee time was looking at the enlistment oath and said "Holy shit! Title 10 of the US Code says the enlistment oath has to have 'so help me God' in it! It shouldn't be optional!". So the USCF changed the rules to "fix" this "problem".
Like I said before, it's typical Chair Force fuckwittery. Just like the McPeak Uniform.





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