I fly the Tomcat on the BF PG server for most of my flying and I have only experienced this for the first time tonight.
Locking a Hornet WVR, Jester said "Hey watch it, that's a buddy". Mostly he will just ID the aircraft I've locked by saying "That's a Hornet/Harrier/Eagle/etc" which is extremely useful.
Perhaps it's related to the TCS bug? Although I haven't experienced that, the TCS worked great tonight.