LESS THAN STANDARD SEPARATION BETWEEN MIL-FGT AND MIL-SPC. OPERATIONAL ERROR.

Narrative

FGT X; BEING SEQUENCED TO THE LCL LFI MIL BASE WAS GIVEN A SEBND HDG FOR INTRAIL RESTRICTIONS. SPC Y DEPARTED FOR THE WARNING AREAS REQUESTING 4000'. FGT X WAS DSNDED TO 4000'; TURNED WBOUND AND SPC Y WAS GIVEN DIRECT TO THE WARNING AREAS (EBND). TFC WAS BUSY AND COORD BY LANDLINES AND WITH ORF FLT DATA PEOPLE CAUSED ATTN TO BE TAKEN AWAY FROM THE RADAR SCOPE. TFC WAS GIVEN TO SPC Y ABOUT THE ONCOMING FGT WHO I BELIEVED I HAD ONLY DSNDING TO 5000' (NOT 4000'). FGT X WAS ADVISED TO MAINTAIN 5000'; HE THEN ADVISED ME RADAR CONTACT WITH THE OPP DIRECTION SPC Y; BUT LESS THAN MINIMUM SEP HAD EXISTED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR GAVE ARPTS INVOLVED AND APPROX LOCATION OF CONFLICT. AFTER FGT X RPTED RADAR CONTACT ON SPC Y THE CTLR CLBED FGT X BACK UP TO 5000'. LOWEST FGT GOT WAS 4300' WITH SPC Y AT 4000'. FLT X PASSED BEHIND SPC Y WITH VISUAL CONTACT. NO OTHER CORRECTIVE ACTION BY ATC. SUPPLEMENTAL INFO FROM ACN 99191: I WAS GIVING AN EVALUATION ON A RADAR POS. I WAS CURRENT BUT NOT THAT PROFICIENT. I MISSED THE DSCNT GIVEN TO THE FGT PLT WHICH WAS OK UNTIL TRNEE TURNED ACFT TOWARDS EACH OTHER.