We have traditionally identified the angel flying through the
midst of heaven as Moroni, even though other scriptures clearly suggest a
number of angels or messengers; therefore, this is a composite angel involved
in the restoration of all things (see also D&C 77:8; 133:36). (D. Kelly
Ogden and Andrew C. Skinner, Verse by Verse: Acts Through Revelation [Salt
Lake City: Deseret Book, 1998], 335-36)