Hearing Spanish language chatter - probably freebanders (outbanders, either licensed or not, they're de facto amateur radio operators in whichever country they're in) on 6740 kHz USB and 6755 kHz USB. I have logged 6755 USB several times (it is a bad frequency choice due to the fact that the Canadian military uses 6754 kHz USB)...but I think this is the first time I've heard a QSO on 6740 kHz USB. Naturally, this is an even worse choice...as the USAF uses 6739 kHz USB.
I've heard CANFORCE meteo broadcasts on 6754 USB fighting with Spanish speaking freebanders or pescadores on 6755 USB, I'm sure its happened with 6712 kHz and 6739 kHz too.