BE95 PLTS ARE CONDUCTING PRACTICE INST APPROACHES WHEN A T38 OVERTAKES; RESULTING IN AN EVASIVE TURN.

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WE WERE WITH NORCAL APCH (127.4) ON VFR TA'S FOR PRACTICE APCHS AT MHR. WE HAD BEEN GIVEN A DISCRETE CODE AND WERE IN RADAR CONTACT AND GIVEN A VECTOR TO FLY 050 DEGS AT 3000 FT WHICH PUT US ESSENTIALLY ON A WIDE DOWNWIND FOR ILS RWY 22L AT MHR. DURING THIS SEGMENT OF THE FLT I WAS ON THE CTLS AND UNDER THE HOOD. I WAS TAKING INSTRUCTION FROM ANOTHER INSTRUCTOR. AFTER WE WERE ESTABLISHED ON THE ASSIGNED VECTOR; THE APCH CTLR NOTIFIED US OF TFC 'A T-38 IN YOUR 5 O'CLOCK POS CLBING THROUGH YOUR ALT AND WILL OVERTAKE.' MY INSTRUCTOR RESPONDED THAT WE WERE LOOKING FOR THE TFC. APPROX 5 SECONDS AFTER THE CALL FROM APCH; MY INSTRUCTOR TOLD ME TO LIFT THE HOOD UP AND LOOK. AT THE SAME TIME HE TURNED THE PLANE TO OUR R. AS I LOOKED OUT THE L WINDOW I SAW A T-38 WITHIN 200 FT OF US TRAVELING PAST US ON APPROX THE SAME HDG WE WERE ON AND CLBING RAPIDLY. THE T-38 WAS TRAVELING WELL IN EXCESS OF 200 KIAS. WE NOTIFIED ATC THAT 'IT WAS TOO CLOSE.' THE NORCAL CTLR THEN BEGAN A SHORT DIALOGUE WITH THE T-38 PLT BUT WE COULD NOT HEAR ALL OF IT BECAUSE THE T-38 WAS XMITTING ON UHF. IT APPEARED FROM THE APCH CTLR'S WORDS THAT HE THOUGHT THAT THE TWR AT MHR HAD NOTIFIED THE T-38 OF OUR PRESENCE. WE WERE NOT IN THE MHR CLASS D AIRSPACE. THE FACTORS IN THIS INCIDENT APPEARED TO BE POOR COM BTWN THE TWR CTLR AND THE TRACON AS WELL AS THE T-38 USING UHF; WE COULD NOT HEAR HIM AND KNOW THAT HE WAS COMING. THIS APPEARED TO SURPRISE THE TRACON CTLR AS HIS CALL CAME WARNING US ONLY A FEW SECONDS BEFORE WE CONVERGED.