re you'll be able to figure out what to do with this stuff,"
O'Brine said. "If you need help, let me know."

And Rip knew his apology was accepted.

The deputy commander arrived, drew O'Brine aside, and whispered in his
ear. The commander let out an exclamation and started out of the room. At
the door he turned. "Better come along, Foster."

Rip followed as the commander led the way to his own quarters. At the
door two space officers were waiting, their faces grave.

O'Brine motioned them to chairs. "All right, let's have it."

The senior space officer held out a sheet of flimsy. It was pale blue,
the color used for highly confidential documents. "Sir, this came in
Space Council special cipher."

"Read it aloud," O'Brine ordered.

"Yes, sir. It's addressed to you, this ship. From Planeteer Intelligence,
Marsport. 'Consops cruiser departed general direction your area. Agents
report crew _Altair_ may have leaked data re asteroid. Take appropriate
action.' It's signed 'Williams, SOS, Commanding.'"

Rip saw the meaning of the message instantly. The Consolidation of
People's Governments, of Earth, traditional enemies and rivals of the
Federation of Free Governments, needed radioactive minerals as badly as,
or worse than, the Federation. In space it was first come, first take.
They had to find the asteroid quickly. It was to prevent Consops from
knowing of the asteroid that security measures had been taken. They
hadn't worked, because of loose space chatter at Marsport.

O'Brine issued quick orders. "Now, get this. We have to work fast.
Accelerate fifty percent, same course. I want two men on each screen.
If anything of the right size shows up, decelerate until we can get mass
and albedo measurements. Snap to it."

The space officers started out, but O'Brine stopped them. "Use one
long-range screen for scanning high space toward Mars. Let me know
the minute you get a blip, because it probably will be that Consops
cruiser. Have the missile ports cleared for action."

Rip's eyes opened. Clear the missile ports? That meant getting the
cruiser in fighting shape, ready for instant action. "You wouldn't fire
on that Consops cruiser, would you, sir?"

O'Brine gave him a grim smile. "Certainly not, Foster. It's against
orders to start anything with Consops cruisers. You know why. The
situation is so tense that a fight between two spaceships might plunge
Earth into war." His smile got even grimmer. "But you never know. Th