Hi, KeiJohn,

If you move your pointer around and look at the elevation readout below the viewer screen, you'll see that the terrain in this area is about 4000 ft high, and this is approximately where the zoom-in bottoms out.

As you point out, the aircraft will be much higher than that. It's difficult to judge the height of an aircraft from a satellite image, since the enormous height of the camera above the subject virtually removes perspective. In other words, if there were another KC-135 on the ground immediately below the flying aircraft, it would appear to be the same size, so we couldn't use that as a basis for estimating height.

Cheers

Frank