ZJX CTLR DESCRIBED CONFLICT SET UP BY ADJACENT MIL CTLR WHEN HE ISSUED CLIMB THROUGH ARR ACFT; REPORTER ISSUED CORRECTIVE CLRNC.

Narrative

I WAS WORKING THE RADAR POS AT ZJX CRESTVIEW SECTOR (R10). THE ARRIVING E145 WAS LNDG EGLIN AFB FROM THE W ON J2 HEADED EBOUND TOWARDS THE CEW VOR. THE ACFT WAS DSNDING TO 15000 FT FOR 14000 FT TFC THAT WAS XING OUT HEADED NEBOUND AND THEN WOULD BE DSNDED TO 11000 FT TO COMPLY WITH THE LOA. EGLIN RAPCON INITIATED THE HDOF ON A DEPARTING E145 THAT WAS ON A 360 DEG HDG; CLBING TO 10000 FT AS PER THE LOA BTWN OUR 2 FACILITIES. THE EGLIN RAPCON CTLR CALLED MY D-SIDE AND REQUESTED A CLB AND HIGHER ALT FOR THE DEPARTING E145. THE EGLIN CTLR WAS GIVEN APPROVAL TO CLB THE DEPARTING E145 TO 15000 FT AS LONG AS HE WOULD PROVIDE THE SEPARATION BTWN THE ARRIVING E145 AND THE DEPARTING E145. MOMENTS LATER; THE DEPARTING E145 CHKED ONTO THE FREQ OUT OF 11000 FT CLBING TO 15000 FT HEAD-ON WITH THE ARRIVING E145 THAT WAS OUT OF 15000 FT DSNDING TO 11000 FT WITH ONLY 10 NM BTWN THEM. I REALIZED THAT THE EGLIN CTLR HAD SWITCHED THE DEPARTING JET WITHOUT ENSURING SEPARATION BTWN THE ARRIVING CTLR AND STOPPED BOTH ACFT IN TIME TO PASS OVER EACH OTHER WITH THE REQUIRED 1000 FT SEPARATION. I LATER CALLED THE EGLIN RAPCON CTLR TO INVESTIGATE WHY HE HAD NOT SEPARATED THE ACFT BEFORE SWITCHING IT TO MY FREQ. THE CTLR SOUNDED LIKE HE DID NOT CARE ABOUT THE SITUATION AND WAS AWARE OF THE HEAD-ON SITUATION BEFORE SWITCHING THE ACFT TO MY FREQ. TALKING TO OTHER CTLRS IN MY AREA; EGLIN RAPCON HAD FAILED TO COORD SEVERAL CTL INSTRUCTIONS AND AIDED IN SEVERAL SITUATIONS THAT WOULD HAVE OCCURRED IN A LOSS OF SEPARATION IF THE ZJX CTLRS DID NOT TAKE ACTION EARLIER DURING THE MORNING SHIFT.