Havent had a chance to try it. But this is from OB update notes on how to see them.
Add TSD Threat Rings. Threat rings are based on hostile air defence units placed in the Mission Editor that are not “Hidden on MFD”. To display, select TSD SHOW at T3, COORD SHOW at T6, and then PLANNED TGTS/THREATS at L5. Yellow rungs indicate estimated detection range and red rings indicate estimated engagement range. When enabled, threats will also be listed on the COORD page, COORD list.