“Well, you’re getting it.” He smiled. “And unless I read the signs wrong, you are going to get your experience in overdoses from now on.”

“Oh! Do you think so?”

“I’m sure of it. There are things I can’t tell you. Keep your eyes and ears wide open and don’t miss any bets. You’ll get your bars sooner than you think.

“And now,” he handed her the glasses again, “plug up your ears. Here they go.”

This time she took things more calmly. But the hit was hard to spot.

“Right at the water’s edge,” she exclaimed at last.

“Getting better. That’s real sub shooting.”

“But if the sub comes in the night?” she suggested.

“Then you’ll have to get out there in a plane and spot the sub for us with a spotlight.”

“That,” said Tom, with a good-natured grin, “is my job.”