AN SMA PENETRATED A MIL ATA INADVERTENTLY. HE THOUGHT THAT HE HAD BEEN HANDED OFF BY THE PREVIOUS CTLR.

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I LIFTED OFF FOR A VFR LCL SIGHTSEEING TRIP FROM DET WITH A R TURN APPROVAL FROM RWY 33 TO GO NBOUND. I WENT N; THEN NE TOWARD LAKE ST. CLAIRE; THEN N AGAIN FOLLOWING THE SHORELINE. AT SOME POINT DURING THE ABOVE TURNS; DET ASKED IF I WAS ON COURSE. I TOLD HIM MY INTENTIONS AND HE SAID STAY ON HIS FREQ; BUT SHORTLY HE WOULD HAVE A NEW FREQ FOR ME. (I THOUGHT DURING THIS TIME HE WAS CONTACTING ANOTHER FACILITY ABOUT MY FLT.) MINS LATER; HE GAVE ME A NEW FREQ FOR SELFRIDGE APCH. I TUNED TO THAT FREQ; BUT HAD TO WAIT A COUPLE OF MINS SO NOT TO STEP ON OTHER CONVERSATIONS. I FINALLY CONTACTED THEM WITH 'N- NUMBER WITH YOU AT 2700 FT.' HE CAME BACK TO ME WITH 'N- NUMBER STAND BY.' MEANWHILE I'M GETTING CLOSER AND CLOSER TO SELFRIDGE ANGB AND GETTING NERVOUS ABOUT IT. I ALSO THOUGHT IT WAS A HDOF SO THEY KNOW I'M THERE AND APPROVE IT OR THEY WOULD HAVE GIVEN ME OTHER VECTORS. HE FINALLY CAME BACK AND ASKED ME TO SQUAWK XXXX AND IDENT. I DID. JUST THEN; A MIL JET CIRCLED AROUND IN FRONT OF ME AT APPROX THE SAME ALT AND APPROX 1 MI AWAY. THE APCH CTLR ASKED WHERE I WAS. I TOLD HIM I WAS OVER THE LAKE JUST E OF HIS BASE. HE THEN SAID I WAS 3 MI SE OF HIS BASE AND SAID I ENTERED HIS AIRSPACE BEFORE MAKING CONTACT WITH HIM. I SAID I WAS HANDED OFF TO HIM BY DET TWR 8 MI N OF DETROIT CITY ARPT. HE SAID THEY WERE VERY UPSET WITH ME. THE SAME SELFRIDGE APCH CTLR GAVE ME RADAR ADVISORIES FOR MY TRIP UNTIL I ASKED FOR VECTORS BACK TO DETROIT CITY ARPT. HE SAID TO TERMINATE HIS RADAR COVERAGE AND CONTACT DETROIT APCH. HE NEVER AGAIN MENTIONED THE NEAR MISS INCIDENT. I DID NOT CONTACT DET APCH. I CONTACTED DET TWR FOR LNDG AND DID SO WITHOUT INCIDENT.