"Shall we knock?" asked Mike humorously. "I doubt they've got a door-bell!"
But the lock-door was opening to admit them. They crowded inside.
Commander Brown was waiting for them with an out-stretched hand. "Glad to have you aboard." And there was a genuine smile creeping across his face.
Joe talked with careful distinctness into a microphone. His voice took a little over a second to reach its destination. Then there was a pause of the same length before the first syllable of Sally's reply came to him from Earth.
"I've reported to your father," said Joe carefully, "and the Moonship has reported to the Navy. In a couple of hours Haney and the Chief and Mike and I will be taking off to go back to the Platform. We got rockets from the stores of the Moonship."
Sally's voice was surprisingly clear. It wavered a little, but there was no sound of static to mar reception.
"Then what, Joe?"
"I'm bringing written reports and photographs and first specimens of geology from the Moon," Joe told her. "I'm a mailman. It'll probably be sixty hours back to the Platform—free fall most of the way—and then we'll refuel and I'll come down to Earth to deliver the reports and such."
Pause. One second and a little for his voice to go. Another second and something over for her voice to return.