Cadet Richard Prescott, now a first classman, and captain of one
of the six cadet companies, stepped forward, saluting.

"You will build the bridge today, Mr. Prescott, continued the
instructor, Lieutenant Armstrong, Corps of Engineers, United States
Army.

"Very good, sir," replied Dick.

With a second salute, which was returned, Prescott turned to divide
his command rapidly into smaller detachments.

It was work over which not a moment of time could be lost. All
must be done with the greatest possible despatch, and a real bridge
was called for---not a toy affair or a half-way experiment.

"Mr. Holmes," directed Prescott, "you will take charge of the
boats. Mr. Jordan, take charge of the balk carriers!"

A balk is a heavy timber, used, in this case, in the construction
of the pontoon.

Cadet Jordan, one of the biggest men, physically, in the first
class, scowled as he received this order for what was especially
arduous duty.

"That's mean of you, Prescott," glowered Jordan.

"If you have any complaints to make, sir, make them to the instructor,"