Clay started to say something, got flustered and wheeled around to leave—and bounded right off Ben Martin's chest. Ferguson mumbled something and pushed past the older officer.

Ben looked after him and then turned back to Car 56's combination doctor, surgeon and nurse. "Glad to see the hostess aboard for this cruise. I hope you make the passengers more comfortable than you've just made the first mate. What did you do to Clay, Kelly?"

"Hi, Ben," Kelly said. "Oh, don't worry about junior. He just gets all fluttery when a girl takes away his masculine prerogative to make cleverly lewd witticisms. He'll be all right. Have a happy holiday, Ben? You look positively fat."

Ben patted his stomach. "Carol's good cooking. Had a nice restful time. And how about you. That couldn't have been all work. You've got a marvelous tan."

"Don't worry," Kelly laughed, "I had no intention of letting it be all study. I spent just about as much time under the sun dome at the pool as I did in class. I learned a lot though."

Ben grinned and headed back to the front of the car. "Tell me more after we're on the road," he said from the doorway. "We'll be rolling in ten minutes."

When he reached the cab, Clay was already in the right-hand control seat and was running down the instrument panel check. The sergeant lifted the hatch door between the two control seats and punched on a light to illuminate the stark compartment at the lower front end of the car. A steel grill with a dogged handle on the upper side covered the opening under the hatch cover. Two swing-down bunks were racked up against the walls on either side and the front hull door was without an inside handle. This was the patrol car brig, used for bringing in unwilling violators or other violent or criminal subjects who might crop up in the course of a patrol tour. Satisfied with the appearance of the brig, Ben closed the hatch cover and slid into his own control seat on the left of the cab. Both control seats were molded and plastiformed padded to the contours of the troopers and the armrests on both were studded with buttons and a series of small, finger-operated, knobs. All drive, communication and fire fighting controls for the massive vehicle were centered in the knobs and buttons on the seat arms, while acceleration and braking controls were duplicated in two footrest pedals beneath their feet.

Ben settled into his seat and glanced down to make sure his work-helmet was racked beside him. He reached over and flipped a bank of switches on the instrument panel. "All communications to 'on,'" he said. Clay made a checkmark on his list. "All pre-engine start check complete," Clay replied.

"In that case," the senior trooper said, "let's give Beulah some exercise. Start engines."