Because Gen Caine is retired, he will have to be called back to active duty for the #Senate to hold hearings on his nomination. Only one retired officer has been called back from retirement to serve as chair: Gen Maxwell Taylor in 1962 by JFK.
It’s unclear if Gen Brown will remain chair until his successor is confirmed by the Senate, or whether Adm. Christopher W. Grady, the vice chair, would serve as the acting #JointChiefs chair.
#Trump has now fired 4 four-star officers in the past month.