"Then I will put aboard a man who can steer. Thus the 'Spitfire' will be seen moving about the bay, and apparently at work. I'll also put aboard a guard of a sergeant and three or four soldiers of the engineer corps, and they'll guard that boat from harm with their lives. That will leave all three of you young officers of the 'Spitfire' free for shore duty."

"It will, Major. And now, sir, what is that shore duty to be?"

"Simply to locate Millard. He may be at one of the hotels in Radford."

Radford was the busy, important little port four miles farther up the bay.

"He's likely to be somewhere in Radford, anyway," nodded young Benson.

"Wherever the fellow is found, he must be seized at once," continued Major Woodruff, warmly. "Any policeman will seize him on your request. I will give each of you three a written statement that you have been asked to locate Millard and have him arrested. If you run across Millard anywhere, turn him over to a policeman, then show my written authorization. On that the police authorities will hold the scoundrel and notify the military authorities. Then, once we have Millard out at Fort Craven, securely under lock and key, by authority from Washington, we will make every effort under the sun to locate his charts and notebooks."

"Why, the work you want us to do is going to be easy enough," murmured
Captain Jack.

"It is going to be easy, if you succeed in finding the fellow, and in turning him over to a policeman," replied Major Woodruff. "And, by the way, I have just remembered that Lieutenant Ridder, of the engineer corps, reported last night from a former station in the West. No one around here will know him. Good enough! I'll have Ridder get into citizen's clothes and go about with you three. He can give you instructions on any point about which you're in doubt."

"We ought to run that rascal down, sir," answered Jack Benson, rising.
"Unless—"

"Unless what, Benson?"