took them to the library on the ground floor.

"Now, I'll telephone for Lieutenant Ridder to come over in citizen's
dress," announced the major. "At the same time, I must advise Colonel
Totten, who is commander of the post. He may come over here, or he may
order us all over to headquarters."

Colonel Totten elected to come over to the major's quarters. He arrived
just after Lieutenant Ridder, who proved to be a rather boyish looking
young man, not long out of West Point.

The plans were quickly laid by which Lieutenant Ridder was to take an
automobile up to Radford, going to one of the hotels and registering.

Jack and his two chums were to make the journey in another auto. They
would go to still other hotels, perhaps to three different ones. At any
moment when instructions were needed, any one of the three could call up
Lieutenant Ridder on the telephone.

In addition, Major Woodruff gave each of the three submarine boys a
written and signed authorization for them to call upon the police to
seize Millard, if found, and hold the fellow for the United States
military authorities.

"Now, you young men may start for Radford," continued the major.
"Colonel Totten and I will busy ourselves with the despatches that must
be sent to Washington about this affair. But I trust, lads, you will
not fail to realize the importance of prompt success."

"It's a special duty to the Flag, sir," Captain Jack answered, simply.