Not sure at what point in the cruise that pic was taken but without comparing bu no’s that may not be the same NK100 as other pics you’re trying to compare chin fairings to. Remember they lost more than a couple ac so NK1xx numbers changed during the cruise.
Also, there were various chin fairings during that cruise on the Wolfpack ac. Some had nothing, or just the small ecm bump, the IR fairing, and despite statements to the contrary, at least twice that I can recall, I saw the flat face TCS type fairing.
I wasnt in VF-1 but was a troubleshooter on A-6’s so got to see the tomcat