NMAC IN PROX OF DEP RTE OF MIL FACILITY BTWN TFC WATCH ACFT; A C172 AND DEP MIL ACFT; A VIKING S3A; FROM NKX; NAS MIRAMAR. EVASIVE ACTION TURN BY C172.

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ON NOV XX 1996; I WAS FLYING CESSNA FOR LEASING SVCS; A TFC RPTING SVC IN SAN DIEGO; CA. MY RPTR AND I WERE ON A INTERSTATE 5 N TRANSITION AT 1300 FT MSL; 200 FT BELOW THE LATERAL LIMITS OF NAS MIRAMAR CLASS B AIRSPACE. THIS PORTION IS KNOWN AS THE SEA WOLF CORRIDOR. WX CONDITIONS WERE 1800 FT SCATTERED 2000 FT BROKEN VISIBILITY GREATER THAN 10 MI. DURING OUR NBOUND TRANSITION I WAS SCANNING FOR TFC AND SPOTTED A LARGE FAST MOVING MIL ACFT AT MY 4 O'CLOCK POS APPROX 150-200 FT LOWER AND CLBING. I IMMEDIATELY BANKED MY ACFT TO THE L; AND REVERSED COURSE. THE ACFT; AN S3 VIKING; CONTINUED ON A WESTERLY HEADING CLBING THROUGH OUR ALT AND INTENDED COURSE. THE S3 PASSED OFF MY R WING AS I WAS TURNING L AT APPROX 100-150 FT. I HAVE NO DOUBT HAD I NOT SEEN THIS ACFT AND TAKEN EVASIVE ACTION THAT WE WOULD HAVE COLLIDED. I IMMEDIATELY NOTIFIED MIRAMAR TWR AND EXPLAINED WHAT HAD JUST HAPPENED. THEIR RESPONSE WAS 'ROGER.' UPON COMPLETION OF THE SHIFT I TELEPHONED MIRAMAR TWR AND SPOKE TO THE TWR SUPVR. HE TOOK A STATEMENT OF THE EVENTS AND SAID HE WOULD FORWARD IT UP THE CHAIN OF COMMAND. THEN I NOTIFIED MY EMPLOYER OF THE INCIDENT. I AM EVER GRATEFUL FOR ALL THE INSTRUCTORS WHO POUNDED INTO MY HEAD 'KEEP YOUR HEAD ON A SWIVEL' AND THE IMPORTANCE OF A GOOD THOROUGH SCAN. THIS AREA IS A CONGESTED TFC AREA; AS TORREY PINES GOLF COURSE IS A VFR RPTING POINT FOR MYF. THE MIL TFC IS USUALLY AT 2000 FT ON WBOUND DEPS; WELL WITHIN THEIR CLASS BRAVO AIRSPACE. IF YOU HAVE ANY QUESTIONS PLEASE CALL ME.