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