On the right wall are two modern icons in the Byzantine style, one showing St Michael the Archangel as the patron of the Gendarmerie and the other St Barbara and Pope St Leo IV. The former is holding the tower that is her attribute, as her legend describes her being locked in one by her psychotic father. Pope St Leo built the Leonine Walls, and also allegedly stopped a fire in the Borgo by making the sign of the cross. Hence he is a special patron of Vatican fire-fighters.