It's time to talk about the drones

So, congress is apparently getting a classified briefing about the drones. Classified? If they don’t know anything about them, why is the briefing classified? I’m so tired of being kept in the dark about things like this. If they are some kind of classified projects going on, why do it over populated areas where they can be seen?

There are a few reasons it could be classified. Could be that they have intelligence on what it is and it is indeed a national security issue that they’re in the midst of response and it has to be classified. But it could also simply be that the technology they’re using to obtain the information for the briefing is classified - or the meeting otherwise discussed classified details (such as locations of military equipment).