Use of Modals in progressive form
by Work going on
He will be facing the interview tomorrow. (100 % surety of facing the interview tomorrow)
He may be facing the interview tomorrow. (50 to 60 % surety of facing the interview)
He might be facing the interview tomorrow. (20 to 30 % surety of facing the interview)
He must be facing the interview tomorrow. (He needs a job anyhow; therefore, up to 90 % surety of facing the interview)