Republican Benghazi Report disputes that, may want to read it.
"The report, which included perhaps the most exhaustive chronology of the attacks to date, did not dispute that United States military forces stationed in Europe could not have reached Benghazi in time to rescue the personnel who died — a central finding of previous inquiries."
https://www.nytimes.com/2016/06/29/us/politics/hillary-clinton-benghazi.html
I don't dispute assets in Europe could have reached Benghazi in time..... No brainier.
We had assets in Libya.