USAF HF-GCS Busy 4724 kHz USB 6739 kHz USB 8992 kHz USB 11175 kHz USB

[R4002]

While tuning through the bands last night and this morning looking for freebanders, peskies, etc, I noticed 6739 USB is a lot busier than it has been in recent memory.  No doubt this has to do with the activity in the Mediterranean Sea.  Heard "Guidepost" and "Andrews" making long alphanumeric broadcasts, mostly with the prefix "All Stations All Stations" and the ominous "Skyking Skyking Do Not Answer"  After a several minute long string, heard "disregard this transmission, this is Guidepost out" followed by 5 or so seconds of silence and then another alphanumeric string. 

[R4002]

Due to increased US military activity over the past several weeks, 6739 kHz USB, 8992 kHz USB and 11175 kHz USB have been very active lately.  Several stations working Andrews and other callsigns around 1600 UTC today (20 April 2017) including a station requesting a read-back on 11175 kHz USB only.