'Mid heaven' in the Bible

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 blasts of the other trumpets of the three angels who are about to sound!"

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

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