I see this as being a 4300 KM flight with no reserves, no Loiter time, no other allowance for start, take off, approaches and landing(s).
MC-130's involved?
AC-130's perhaps?
Approximately 3400 KM's to Bor and 900 to Entebbe.
That fit with an un-refuelled flight scenario....assuming Entebbe was the intended Exfil Destination?
Which would mean US Forces at both Bor, Entebbe, and Nairobi.
As an aside.....how far from Sigonella to Benghazi....about 2300 KM?
Shame we had no troops or CV-22's in Sigonella back during that tragedy where Four Americans got killed.