That all may be true for a lot of people, however I came to my conclusion about it being classified information based off the reactions of a few retired airmen, generals and a few others who I know personally and respect their knowledge due to being directly involved in nuke policy. The general consensus I've gotten is "I can't confirm how accurate that her statement was, but if I'd said it in that manner (live TV) I'd be dead to the world and in a hole somewhere being waterboarded." Additionally when asked by journalists the DOD (IIRC it was a radio news blurb and I missed who was being asked the question, might've been the white house) didn't kill the story by saying she was inaccurate, or that the information wasn't classified, the spokeshole dodged the question and stated they weren't willing to turn this into a matter of politic by confirming it was classified. (bit of paraphrasing on my part, haven't been able to find the actual press bit)
Final bit, I was digging through FOIA paperwork copies of regarding the Cuban Missile Crisis (It was for a history report and I wanted to be thorough professor gave me an extension because I proved I'd filed a FIOA request) and nuke force Response Times, as late as 2012 (when I was doing the report), fall under a special access program and are limited to a handful of military brass and the following handful in the cabinet: President, Vice President, Secretary of State, Secretary of Defense, Secretary of Homeland Security, Attorney General, Director of National Intelligence, CIA Director, Deputy Secretary of State, Deputy Secretary of Defense and Special personnel designated solely by the President in written form only with a burn after reading mandate. However this policy may have changed since then.
...Regardless, let's not let this spiral out of control.