[MilCom] CG 121 on the East Coast?

[Mac McCormick III]

Does anyone have any idea what USCG area might be using CG 121
(165.3125 NAC 293) on the east coast.  I'm hearing it in Savannah this
morning, weakly, but it seems to be encrypted so no content to draw
conclusions from.

I know CG 127 is Sector Charleston, CG 113 is Station Tybee, CG 118 is
Station Brunswick (GA), and CG 111 is Sector Jacksonville but I don't
have anything on CG 121.

Thanks in Advance,

-- 
Mac McCormick III, KF4LMT
Savannah, GA
http://kf4lmt.wordpress.com/