Membership Drive by Murray F. Yaco

Thirty million miles out, Keeter began monitoring the planet's radio and television networks. He kept the vigil for two sleepless days and nights, then turned off the receivers and began a systematic study of the notes he had taken on English idioms and irregular verbs. Twelve hours later, convinced that there would be no language difficulty, he left the control room, went into his cabin and fell into bed. He remained there for sixteen hours.

When he awoke, he walked to a locker at the end of his cabin, opened the door and carefully selected clothing from a wardrobe that was astonishing both for its size and variety. For headdress, he selected a helmet that was not too different in design from the "space helmets" he had viewed on a number of television programs. It would disappoint no one, Keeter reflected happily, as he took a deep breath and blew an almost imperceptible film of dust from the helmet's iridescent finish.

Trousers and blouse were a little more of a problem, but finally he compromised on items of a distinct military cut; both were black and unembellished, providing, he hoped, an ascetic, spiritual tone to temper the military aura.