"Yes," Don responded, "I had thought of that, and I've already got my reckonings. It's merely a matter of recording them, which I'll do at once."

"Too bad for them," Jack said, with genuine sorrow in his voice. "But it was they or we. There was nothing else to it. They forced the issue and we had no alternative. I wonder who they were."

"I saw them all, at one time or another during the firing," Don then informed his companions. "But there was only one I thought I might have seen somewhere before. But when it was, or where, I'm at a loss to tell. As a matter of fact, I'm not at all certain that I ever saw him. But somehow his face seemed familiar."

"Well, we'd better be on our way," said Jack. "No use in staying around here. Those fellows probably went down so far that, even if they're not entangled in the wreckage, it's doubtful whether they ever would come up again."

"I've got it!" ejaculated Don abruptly.

"Keep it then," advised Andy, good-naturedly, despite the latest excitement they had been through.

"I've got it! That's it, surely," Don repeated again, gazing out abstractedly, as one will when absorbed in some recollection.

"Got what?" demanded Fred, impatiently. "Better get rid of it if you have, don't you think?"

"Eh?" Don looked at him blankly. "Oh, yes. Say! Do you know who that fellow was that I thought I recognized in that plane?"

"No, who?" asked Jack, keenly interested.