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Also by Eric Flint:

1637: The French Correction, April 2026
Mass Market Paperback
An Angel Called Peterbilt, February 2025
Mass Market Paperback / e-Book
1637: The Transylvanian Decision, November 2023
Mass Market Paperback / e-Book
1638: The Sovereign States, September 2023
Hardcover / e-Book
To End in Fire, October 2021
Hardcover
Grantville Gazette IX, July 2021
Hardcover
1636: The Atlantic Encounter, August 2020
Trade Size / e-Book
1636: The Atlantic Encounter, August 2020
Hardcover / e-Book
1635: A Parcel of Rogues, January 2016
Hardcover
Ring of Fire II, January 2008
Hardcover
1634: The Ram Rebellion (The Ring of Fire), December 2007
Mass Market Paperback
Grantville Gazette II (The Ring of Fire), November 2007
Mass Market Paperback
1634: The Bavarian Crisis (The Ring of Fire), October 2007
Hardcover
1634: The Baltic War, May 2007
Hardcover
Rats, the Bats and the Ugly, August 2006
Paperback (reprint)
Trouble with Aliens, August 2006
Hardcover
1634: The Galileo Affair, July 2006
Paperback (reprint)
Destiny's Shield, June 2006
Paperback (reprint)
Fortune's Stroke, June 2006
Paperback (reprint)
1634: The Ram Rebellion, April 2006
Hardcover
Boundary, March 2006
Hardcover
The Dance of Time, February 2006
Hardcover
Wizard of Karres, December 2005
Paperback (reprint)
Ring of Fire, October 2005
Paperback (reprint)
This Rough Magic, May 2005
Paperback (reprint)
Crown of Slaves, March 2005
Paperback (reprint)
The Course of Empire, March 2005
Paperback (reprint)
Mountain Magic, October 2004
Paperback
The Warmasters, April 2004
Paperback (reprint)
The Shadow Of The Lion, September 2003
Paperback (reprint)
The Tyrant, September 2003
Paperback (reprint)
Forward the Mage, August 2003
Paperback (reprint)
1633, July 2003
Paperback (reprint)
Pyramid Scheme, February 2003
Paperback (reprint)
Tide of Victory, October 2002
Paperback (reprint)
Philosophical Strangler, March 2002
Paperback (reprint)
Rats, Bats & Vats, August 2001
Paperback (reprint)
1632, February 2001
Paperback (reprint)
In the Heart of Darkness, August 1998
Paperback
An Oblique Approach, July 1998
Paperback
Mother of Demons, September 1997
Paperback

Also by Dave Freer:

Rats, the Bats and the Ugly, August 2006
Paperback (reprint)
Wizard of Karres, December 2005
Paperback (reprint)
This Rough Magic, May 2005
Paperback (reprint)
The Shadow Of The Lion, September 2003
Paperback (reprint)
Pyramid Scheme, February 2003
Paperback (reprint)
Rats, Bats & Vats, August 2001
Paperback (reprint)

PYRAMID SCHEME
By: Eric Flint, Dave Freer

Baen
February 2003
512 pages
ISBN: 0743435923
Paperback (reprint)
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Fantasy | Science Fiction

The new NESOT (Near Earth Space Object Tracking) satellite paid dividends less than three months after its launch. The computerized system spat a data stream on the incoming object to NORAD. It did this for any detected object which would enter the Earth's atmosphere.

The level of NORAD tracking which dealt with objects that should burn up on atmospheric entry was computerized. An alarm sequence was triggered by any anomaly. Twenty-three seconds after it took over from NESOT, the alarm sounded.