Re: What the dear NSA allegedly mean by "Mystic site"?

Brief description of MYSTIC on page 8. Implants in wireless/mobile systems, with subprograms by NCSC, DEA and CIA. A DEA subprogram SANDKEY http://cryptome.org/2014/06/dea-nsa-sandkey.pdf At 12:52 PM 2/7/2015, Georgi Guninski wrote:

From cryptome: http://cryptome.org/2013/11/snowden-tally.htm

19 May 2014 12 Various Pages 12 http://cryptome.org/2014/05/nsa-intercept-14-0519.pdf

p. 2 of the pdf:

"Approx 10-15 SIGINT reports pers week from "Mystic sites" other than Sca....."

1. What does "Mystic site" mean to the dear NSA?

2. Is "site" in the usual computer sense?