Besides USAF KC-46 and C-17, also C-5M are active on HFDL:

[2022-04-03 18:01:41 GMT] [17985.0 kHz] [-5.7 Hz] [-40.0/-54.3 dBFS] [14.3 dB] [300 bps] [S]
Uplink LPDU:
Src GS: Reykjavik, Iceland
Dst AC: 255
Type: Logon confirm
ICAO: AE0585
AC info: 87-0040, Lockheed, C-5M Galaxy, United States Air Force
Assigned AC ID: 181

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