He is leaving DURING the ceremony. It seems nuts to do this, unless one wants to help enable rioters.
Completely strange, especially since this guy is not an Obama loyalist. He was appointed by Bush because he is loyal to the United States, not to Zero.
Changing command during the middle of an important deployment is a strange thing to do — why not replace him effective the next day?
Maybe he did something to p*ss Trump off while “negotiating with the inauguration committee” on a “number of issues?”