Counterterrorism, cyberterrorism, it's real.

By the time President Obama took office, Guantanamo was viewed internationally as a symbol of a counterterrorism approach that flouted our laws and strayed from our values, undercutting the perceived legitimacy - and therefore the effectiveness - of our efforts.

The actions that we take on the counterterrorism front, again, are to take actions against individuals where we believe that the intelligence base is so strong and the nature of the threat is so grave and serious, as well as imminent, that we have no recourse except to take this action that may involve a lethal strike.

When we uphold the rule of law, our counterterrorism tools are more likely to withstand the scrutiny of our courts, our allies, and the American people. And when we uphold the rule of law it provides a powerful alternative to the twisted worldview offered by al-Qa'ida.

When we uphold the rule of law, our counterterrorism tools are more likely to withstand the scrutiny of our courts, our allies, and the American people.

Our counterterrorism tools do not exist in a vacuum. They are stronger and more sustainable when the American people understand and support them. They are weaker and less sustainable when the American people do not.

I want to improve TSA's counterterrorism focus through intelligence and cutting edge technology, support the TSA workforce, and strengthen the agency's relationships with stakeholders and the traveling public. All of these priorities are interconnected and are vital to TSA's mission - and I would say, all of our collective mission.

One of the reasons I continue to speak out is that the solutions to the counterterrorism problem involve other parts of the national security community - especially other elements of the Department of Defense, State, FBI, Homeland Security and the staff.

I knew from the beginning that privacy was going to be a huge issue, especially with regard to applying Total Information Awareness in counterterrorism. Because if the technology development was successful, a logical place to apply it was inside the United States.

Broader social concerns within Muslim communities, such as discrimination, integration or socio-economic disadvantages, should be treated distinctively and not as part of counterterrorism agenda, which has been counter-productive.

Whenever counterterrorism professionals see punditry and media make grand pronunciations on terrorism that defy all demonstrable evidence, an unrepeatable oath is usually muttered.

We certainly have the best special operations forces in the world and know how to do counterterrorism extremely well.

Just take terrorism, for example. We have a team of more than 200 people working on counterterrorism. I mean, that's pretty intense. That's not like what people think about what Facebook is.

The scientific community should work as hard as possible to address major issues that affect our everyday lives such as climate change, infectious diseases and counterterrorism; in particular, 'clean energy' research deserves far higher priority. And science and technology are the prime routes to tackling these issues.

Since leaving the church, I've been working with law enforcement involved in counterterrorism and deradicalization. I hoped that illuminating Westboro's ideology - and especially the unraveling of that ideology - would be useful to the people doing that work.

Counterterrorism, counterproliferation, and counterintelligence are staples. The four countries of highest interest - Russia, China, Iran and North Korea - are constants.

I used to have a little saying I used when people said, 'What are your priorities?' I'd give them a bit of government alphabet soup. I'd say 'CTCPROW: Counterterrorism, counterproliferation, rest of the world.'

I'm over here with the French counterterrorism experts talking about the 'Charlie Hebdo' case, how we can stop foreign fighters from coming out of Iraq and Syria to Europe, but then we have this phenomenon in the United States where they can be activated by the Internet, and, really, terrorism has gone viral.

The dark space is one of the biggest concerns on the part of counterterrorism officials right now. Comey did a good job of explaining how they jump into a direct messaging box and then go into platforms designed specifically to be secure. There's no way, even if we have a lawful court order, to be able to access those communications.

One of the great intellectual failures of the American intelligence community, and especially the counterterrorism community, is to assume if someone hasn't attacked us, it's because he can't or because we've defeated him.

I think what we've learned is that the terrorist threat is serious, but it shifts. You cannot make a single person the sole focus of your counterterrorism.

In the public's mind, Special Forces are often confused with the 'door kickers' of Special Operations Forces - such as SEAL Team 6 and Delta Force - who are the United States' elite counterterrorism operators.

The inattention of the Bush administration to the threat from al Qaeda had results. Shortly before 9/11, Bush's attorney general, John Ashcroft, turned down FBI requests for some 400 additional counterterrorism personnel.

Anne Richard, a senior U.S. State Department official, testified at a Senate Homeland Security Committee hearing in November 2015 that any Syrian refugee trying to get into the United States is scrutinized by officials from the National Counterterrorism Center, FBI, Department of Homeland Security, State Department and Pentagon.

I think there was a pretty smooth hand-off from the administration of President Clinton to the administration of President Bush, particularly in the counterterrorism area. The reason I say that is because there was, for transitions, I think a stunning continuity.

The U.S., often in secret, carries out counterterrorism missions all the time, with drones in places like Yemen and Somalia.

My admonition is, 'No counterterrorism lead goes uncovered.'

Secondly, not only have we put additional agents on counterterrorism, but we've also built up our analytical structure so that we're better positioned to analyze the information we have.

Agents who have left the Secret Service to join other federal law enforcement agencies report that training in firearms and counterterrorism tactics in those agencies in many cases far exceeds the quality of what the Secret Service offered.

I developed a counterterrorism device that's revolutionizing the way we detect nuclear materials.