I don't know, but I stopped believing our government about a year ago.
After I saw startling scientific and physical evidence that 9/11 was an inside job, I remain entirely skeptical of everything the government says. They could be telling the truth, sometimes, and other times merely telling us what they think we want to hear.
America is being dismantled by people who have American passports, but who don't give a damned about America or its Constitution. They're on their way to the New World Order, Bush Sr gushed about on September 11, 1990 -- exactly 11 years before the big, New World Order event.
Still believe the Bush conspiracy theory, as I did for 10 years? Then look at the evidence of tons of iron microspheres which prove explosive melting of iron(steel), and which prove controlled demolition, which proves 9/11 was an inside job.
Don't be fooled like the Germans 80 years ago. They fell for their own version of 9/11 (the Reichstag fire), were up in arms against their patsies (the communists), and cheered while their leader took the nation to war, repeatedly to protect the Homeland Security.