 Following Communion, the Aër is placed, still folded, on the Diskos, together with the Spear, Spoon and Asterisk and little veils, and all are taken back to the Prothesis by the deacon.During a Liturgy of Presanctified Gifts, the priest or deacon wears the Aër on his left shoulder for the Great Entrance.Whenever a bishop first arrives at a church or monastery, he will be greeted by the senior priest holding a tray covered by an Aër, on which is placed a blessing cross for him to kiss.