The third Op-Center novel, Games of State, briefly alludes to the concept of a “Net Force”. This concept was later expanded into its own Net Force series, created by the same men as Op-Center but written by Steve Perry (and later cowritten with Larry Segriff). No direct connection has yet been drawn between the two series, however.
| Publication Order of Tom Clancy’s Op-Center Books | Op-Center (By:Tom Clancy,Steve Pieczenik) | 1995 |   |
| Publication Order of Tom Clancy’s Op-Center Books | Mirror Image (By:Jeff Rovin) | 1995 |   |
| Publication Order of Tom Clancy’s Op-Center Books | Games of State (By:Jeff Rovin) | 1996 |   |
| Publication Order of Tom Clancy’s Op-Center Books | Acts of War (By:Jeff Rovin) | 1996 |   |
| Publication Order of Tom Clancy’s Op-Center Books | Balance of Power (By:Jeff Rovin) | 1998 |   |
| Publication Order of Tom Clancy’s Op-Center Books | State of Siege (By:Jeff Rovin) | 1999 |   |
| Publication Order of Tom Clancy’s Op-Center Books | Divide and Conquer (By:Jeff Rovin) | 2000 | paste here 7 |
| Publication Order of Tom Clancy’s Op-Center Books | Line of Control (By:Jeff Rovin) | 2001 | paste here 8 |
| Publication Order of Tom Clancy’s Op-Center Books | Mission of Honor (By:Jeff Rovin) | 2002 | paste here 9 |
| Publication Order of Tom Clancy’s Op-Center Books | Sea of Fire (By:Jeff Rovin) | 2003 | paste here 10 |
| Publication Order of Tom Clancy’s Op-Center Books | Call to Treason (By:Jeff Rovin) | 2004 | paste here 11 |
| Publication Order of Tom Clancy’s Op-Center Books | War of Eagles (By:Jeff Rovin) | 2005 | paste here 12 |
| Publication Order of Tom Clancy’s Op-Center Books | Out of the Ashes (By:George Galdorisi) | 2014 | paste here 13 |
| Publication Order of Tom Clancy’s Op-Center Books | Into the Fire (With: George Galdorisi) | 2015 | paste here 14 |
| Publication Order of Tom Clancy’s Op-Center Books | Scorched Earth (By:George Galdorisi) | 2016 | paste here 15 |
| Publication Order of Tom Clancy’s Op-Center Books | Dark Zone (By:George Galdorisi) | 2017 | paste here 16 |
| Publication Order of Tom Clancy’s Op-Center Books | For Honor (By:Jeff Rovin) | 2018 | paste here 17 |
| Publication Order of Tom Clancy’s Op-Center Books | Sting of the Wasp (By:Jeff Rovin) | 2019 | paste here 18 |
| Publication Order of Tom Clancy’s Op-Center Books | God of War (By:Jeff Rovin) | 2020 | paste here 19 |
| Publication Order of Tom Clancy’s Op-Center Books | The Black Order (By:Jeff Rovin) | 2021 | paste here 20 |
These characters are in most or all stories from the main series:
- Paul Hood: The Director of Op-Center and former Mayor of L.A.
- General Mike Rodgers: Deputy Director of Op-Center and STRIKER Commander
- Bob Herbert: Chief of Intelligence
- Matt Stoll: In-house computer genius
- Darrel McCaskey: The FBI Liaison
- Lowell Coffey II: Op-Center’s lawyer
- Liz Gordon: Op-Center’s psychologist
These characters are in the stories from the reboot series:
- Chase Williams: The Director of Op-Center and a former U.S. Naval Admiral
- Aaron Bleich: Geek Programmer and Data Analyst
- Roger McCord: Intelligence Director
- Brian Dawson: Operations Director
- Jim Wright: Domestic Crisis Manager
- Richard Middleton: Planning Director
- Hector Rodriquez: JSOC Liaison, Retired Army Sergeant Major
- Sandee Barron: Helicopter Pilot
- Mike Volner: JSOC Response Team Commander
- Allen Kim: FBI CIRG Team Leader
Although familiarly called “Op-Center”, the actual name of the largely autonomous agency is the “National Crisis Management Center“. The charter of the NCMC, or Op-Center, is unlike any other in the history of the United States. They handle both domestic and international crises. Director Paul Hood reports to the President himself, and what had started as “an information clearinghouse with SWAT capabilities” now has the singular capacity to monitor, initiate, and manage operations worldwide. The organization had its own paramilitary response team, called the Striker team, named by an Op-Center member who was a soccer fan, composed of members of the U.S. military special operations community. The series also mentioned similar organizations from England, whose response team was called Bengal, and Russia, with a team called Hammer. It is headquartered in a nondescript, two-story building located near the Naval Reserve flight line at Andrews Air Force Base that used to be a ready room, a staging area for crack flight crews. In the event of a nuclear attack, it would have been their job to evacuate key officials from Washington, D.C.
According to the 2014 reboot franchise, the NCMC was eventually disbanded after the Secretary of Defense and the Director of National Intelligence managed to convince the President of the United States to shut the organization down due to the effectiveness of the US Intelligence Community and Special Forces in the War on Terror (much to the disgust of Paul Hood and Mike Rogers). Years later however, terrorists blow up several NFL stadiums across the country and leave thousands dead or mutilated. It is determined in the resulting investigation that the inability of government agencies to prevent the attacks was due to a lack of information, as well as the inability to put the pieces together in time. In response, the President executes an emergency order that reboots Op-Center for the 21st Century. Retired Admiral Chase Williams is eventually named the new director and Op-Center’s new headquarters is located in the basement of the National Geospatial Intelligence Agency; as its response team, Op-Center utilizes soldiers from the Joint Special Operations Command for overseas missions and a SWAT team from the FBI’s Critical Incident Response Group in order to respond to domestic emergencies.