wings on all four sides; and (each) of the four had the (same) face
and the (same) wings. Their wings touched one another. As they
walked not moved from the front; each went face forward. Their
faces were as follows: a human face (ahead) also had, each of the
four face of a lion, on the right; bull's face to the left; and Eagle
face (back). Their faces and their wings stretched upward; each
had two (wings) that touched with another, and two covered their
bodies. And walking, each face forward; where there took them
the spirit went; they not moved from in front of the walk. These
animals had the appearance of burning, like torches as glowing
fire ran through the middle of these living beings coals; and fire
went forth lightning. And the living creatures ran and returned
that glare of lightning. (Ezekiel 1:5)
At first glance one might say that he is referring to a device
similar to a helicopter, but it's hard to tell.