As the airship moves around the sky {HEAD ~ the image} is visible on {TAIL ~ the exterior} of the craft to observers on the ground 
is visible on
As the airship moves around the sky { HEAD ~ the image } is visible on { TAIL ~ the exterior } of the craft to observers on the ground
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH