 The first paragraph in the passage foreshadows which theme of "Sea Legs"?
SEA LEGS By FRANK QUATTROCCHI Illustrated by EMSH Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Rootless and footloose, a man in space can't help but dream of coming home. But something nobody should do is bet on the validity of a homesick dream! Flight Officer Robert Craig surrendered the tube containing his service record tapes and stood waiting while the bored process clerk examined the seal. "Los Angeles." "Los Angeles, eh? "No specific destination," supplied the man as he punched a key on a small instrument, "Air-lock ahead and to your right. Any metal?" "Metal?" asked Craig. "You know, metal ." "Place your clothing in the receptacle provided and assume a stationary position on the raised podium in the center of the lock." Craig obeyed the robot voice and began reluctantly to remove his flight jacket. Stepping on the button with his bare foot produced an instant of brilliant blue illumination. He found his clothing cleanly and neatly hung on plastic hangers just inside the door to the dressing room. The Schtann flight jacket was actually there, looking like new, its space-blue unfaded and as wonderfully pliant as before. "Insert your right arm into the instrument on the central table," commanded the same voice he had heard before. When he withdrew his arm, the scratch was neatly coated with a layer of flesh-colored plastic material. "Well, what's next?" asked Craig somewhat more belligerently than he had intended. "By 'home' you mean Terra. "No, but my father—" "Your parents left Terra during the Second Colonization of Cassiopeia II, didn't they?" He was uncomfortable; Wyandotte seemed to know all about him. "Oh, I've landed a few times, even walked around for a while...." "Mr. Craig, I suppose you've guessed that the next step in our little torture system here is psych." Short of Gravitational conditioning, there is nothing to stop you from going to Terra." You have spent eleven years in space. Your body is conditioned to a normal state of free fall, or at best to a state of acceleration." Once on Gerymeade...." "You were ill, couldn't keep your balance, felt dizzy. That is why all spacemen carry PON, paraoxylnebutal, with them. It helps suppress certain physiological reactions to an entirely new set of conditions.
 People shouldn't count on places to stay the same
 Society tends to neglect those who have served  If you don't like it, you can always leave  The grass is always greener on the other side  People shouldn't count on places to stay the same