Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 11
Situational Awareness; Time Pressure
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Procedure; Airspace Structure
Aircraft X was at 29;000 feet descending to 24;000 feet when I took the handoff. I don't remember him checking on. The pilot called me and asked me if I have traffic. I wasn't aware of any traffic; but either Conflict Alert went off; or I quick looked the sector above me. There was Aircraft Y at 28;000 feet wired with Aircraft X who was now at 28;000 feet descending to 24;000 feet. I told Aircraft X to turn 30 degrees right immediately and to expedite his descent. I didn't call and get control because I believed the situation was imminent and I had a Radar Assist who could have called. It was a Supervisor who was on my Assist and he's not good at all.There were a lot of conflict alerts going on during this entire session with military aircraft in or around my airspace. I was trying to suppress those Conflict Alerts to clean up the scope. I may have suppressed Aircraft X and Aircraft Y without knowing it. The sector above me was where the conflict happened. The controller working those aircraft is by far the worst controller I've ever worked with or around and that's not an exaggeration. That Controller needs to be taken off the boards. Bottom line or never let them work radar again.
ZJX Center Controller reported receiving a handoff and communications from an overlying sector of an aircraft that was in direct conflict with another aircraft in the overlying sector.