[Scan-DC] Anyone recognize this site in the San Fran area?

[Andrew Clegg]

Does anyone know what this site is? https://goo.gl/maps/wZ9iK41gkN5aygm76

My guess is an FAA facility. There are some experimental licenses to Harris there including some aviation radar frequencies, but no significant permanent FCC licenses, which makes me think it's a federal facility  (http://w4je.com/cgi-bin/geofreq.py?lat_deg=37.515417&lat_min=&lat_sec=&lat_dir=N&lon_deg=122.380028&lon_min=&lon_sec=&lon_dir=W&dmax=1&dmin=0&fmin=0&fmax=300000&lic=&call=&cdbs=1&coals=1&els=1&ibfs=1&uls=1&sort1=dist&sort2=&sort3=&sort4=&kmllab1=lic&kmllab2=&kmllab3=&kmltxt1=call&kmltxt2=freq&kmltxt3=&date=2020-04-27&submit=Submit)

Just wondering if anyone has more certain insight. A friend who was hiking past it this weekend was asking me.

73,
W4JE