AAM3 (plus another station that I didn't catch the callsign for) giving out frequencies for military/amateur interoperability infrastructure reporting exercise COMEX 17-4:
5346.5 kHz SE US
5337 kHz NW US
5371.5 kHz(?) SW US
5403.5 kHz Central US
5330.5 kHz NE US
Followed up by reports coming in on 5330.5 kHz.
(edited....damn analog UTC clock)