Q: On Good Friday, the priest is instructed to have the humeral veil on as he brings out the blessed sacrament to the altar. From what I can tell, there is no instruction for him to take it off. Would he leave it on as he distributes communion, so that he can use it to repose the Eucharist?
A: The priest should remove the humeral veil when it has completed its function: moving the Blessed Sacrament from the tabernacle to the altar. He would definitely not distribute communion wearing the humeral veil. The garment has more to do with adoration than communion. Consequently, when communion is over, the priest does not wear the humeral veil to repose the ciborium in the tabernacle. At that point, his action resembles the one that follows communion at any Mass.