'Mid heaven' in the Bible

And I saw, and heard an eagle flying in mid-heaven, saying with a great voice, "Woe, woe, woe, to those who dwell on the earth, by reason of the other voices of the trumpet of the three angels who are about to sound!"

And I saw another angel flying in mid-heaven, having the eternal Gospel to proclaim to those who dwell on the earth, and to every nation, and tribe, and tongue, and people;

And I saw one angel standing in the sun; and he cried with a great voice saying to all the birds that fly in mid-heaven, "Come, gather yourselves together to the great supper of God;