Revelation 8:13; Revelation 14:6; Revelation 19:17

Revelation 8:13

13 Then I looked, and I heard an eagle flying in midheaven, saying with a loud voice, "Woe, woe, woe to those who dwell on the earth, because of the remaining blasts of the trumpet of the three angels who are about to sound!"

Revelation 14:6

6 And I saw another angel flying in midheaven, having an eternal gospel to preach to those who live on the earth, and to every nation and tribe and tongue and people;

Revelation 19:17

17 Then I saw an angel standing in the sun, and he cried out with a loud voice, saying to all the birds which fly in midheaven, "Come, assemble for the great supper of God,