I found it for you:
WATCH LIVE ON JUNE 12 | 9:30AM ET | C-SPAN2
DC Circuit Oral Argument in Michael Flynn Perjury Dismissal Case
https://www.c-span.org/video/?472993-1/dc-circuit-oral-argument-michael-flynn-perjury-dismissal-case
I found it for you:
WATCH LIVE ON JUNE 12 | 9:30AM ET | C-SPAN2
DC Circuit Oral Argument in Michael Flynn Perjury Dismissal Case
https://www.c-span.org/video/?472993-1/dc-circuit-oral-argument-michael-flynn-perjury-dismissal-case