Breaking News
"Hey folks, we were just playing dumb. Of course, it was one of ours. We were testing a brand new missile that can reach all the way to Alaska. We can see Sarah Palin from our Naval yard."
or
"Hey folks, we really, really, really do NOT know what this was. But we think it might have been little Johnny Dumwater, a 12 year-old geek who likes to build and set off rockets just to keep us off balance."
or
"Hey folks, the Mexican Drug Cartels are now into rockets and..."
Jeez, of course, they know what it is. If they didn't, every security agency in the country would be going nuts and our threat status probably would have been upgraded. They're hiding something.