Sigonella, Sicily is closer to Benghazi than Tripoli:
There is a whole US Naval Air Station there, with US Marines.
Did they have any fast movers there at the time? Looking at a map, I’m doing a rough estimate of 300 to 400 miles from the base to Benghazi, which could have been covered in about 30 minutes (conceivably less), to do some loud flyovers, maybe some strafing runs to scare the crap out of those vermin.
Just saw the figure of 475 miles. F-18 making 1100 MPH would be there in under 30 minutes. F-16 even faster.