ZJX center controller reported receiving a handoff and communications from an overlying sector of an...

Narrative:

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.

Original NASA ASRS Text

Title: 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.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1618659
Time
Date	201902
Local Time Of Day	0601-1200
Place
Locale Reference	ZJX.ARTCC
State Reference	FL
Environment
Light	Daylight
Aircraft 1
Make Model Name	Challenger CL600
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Direct
Flight Plan	IFR
Aircraft 2
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 11
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

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.