One of them, caught with one foot free of the ship in walking, was broken loose also, though he reached wildly for the steel and missed. The cadet next to him, last in line, came loose in turn.

No more separated, as the successive tugs on the line had used .up the energy of the first cadet's not-so-violent jump. But three cadets now dangled on the line, floating and twisting grotesquely.

The instructor caught the movement out of the corner of his eye, and squatted down. He found what he sought, a steel ring recessed in the ship's side, and snapped his static line to it. When he was certain that the entire party was not going to be dragged loose, he ordered, "Number nine-haul them in, gently-very gently. Don't pull yourself loose doing it."

A few moments later the vagrants were back and sticking to the ship. "Now," said the instructor, "who was responsible for that piece of groundhog stupidity?"

No one answered. "Speak up," he said sharply. "It wasn't an accident; it's impossible to get both feet off unless you hop. Speak up, confound it, or I'll haul every last one of you up in front of the Commandant."

At the mention of that awful word a small, meek voice answered, "I did it, sergeant."

"Hold out your hand, so I'll know who's talking. I'm not a mind reader."

"Vargas-number ten." The cadet held out his arm.

"Okay. Back to the airlock, everybody. Stick together." When they were there, the instructor said, "Inside, Mr. Vargas. Unhook your line, snap to the lock and wait for us. You'll take this drill over-about a month from now."

"But sergeant-"