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