Can we draw the following hypothesis from the context? 

Context:

Naval Outlying Field San Nicolas Island or NOLF San Nicolas Island (ICAO: KNSI, FAA LID: NSI) is a military airport located on San Nicolas Island, in Ventura County, California. The airport is administered by Naval Base Ventura County and is one of several Naval Outlying Landing Fields operated by the US Navy.

Hypothesis: Naval Base Ventura County is located on San Nicolas Island
It's impossible to say