Of the 603 former detainees who have been transferred out of the prison camp, we identified only 17 individuals (2.8 percent) who are confirmed to be engaging in terrorist or insurgent activities against the United States or its citizens, while there are 21 individuals (3.5 percent) who are suspected of engaging in such activities.

CNN: Terror threat from Gitmo prisoners is exaggerated

Once Zarqawi was confirmed killed, security forces raided 17 suspected insurgent hideouts across Baghdad, places they couldn't touch previously because it could have compromised the operation to hunt down Zarqawi.

NPR: Attack on Zarqawi Followed Weeks of Waiting

Add to this the facts that less than 3% of the detainees at Guantanamo can be confirmed by the public record to have engaged in anti-American terrorism or insurgent actions following their release and those 17 detainees were all released before the intensive review of the cases of the remaining prisoners at Guantanamo began under the Obama administration in 2009.

CNN: Terror threat from Gitmo prisoners is exaggerated