knew right where he was going, so there was no time lost in search.

Straight to the large safe in the general's private office Hal led the
way. There he passed the light to McKenzie and placed the grip on the
floor.

"No chance it has been left unlocked, I guess," the lad muttered.
"However, I'll try it."

He shook the handle. The safe was locked.

"As I thought," said Hal. "Well, the rest will take time. Turn the
light on the lock, McKenzie."

McKenzie obeyed.

From his grip Hal took an ordinary cake of soap. This he proceeded to
rub around the lock and stuff into the cracks. This done to his
satisfaction, he stepped back and surveyed his work.

"All right, I guess," he said. "I never tackled anything like this
before, but I think I know how it's done."

The next article he produced from the grip was a small vial. One look
told McKenzie what it was. It contained nitroglycerine. This Hal
poured under the edge of the safe. Then he attached a fuse and lighted
it. Immediately he threw a heavy blanket, which was the last article
the grip contained, over the safe to muffle the sound of the explosion
that would occur in a few moments.