y.p,
I would imagine (although I’m not a copyright lawyer either) that “classified” refers to “secret” documents. This photo surely doesn’t fit into that category.
As far as airplane minyanim, that’s always been a concern of mine, although I’ve never heard of a specific rov who addressed it.
Maybe a more frequent flyer than I can answer this question, though: can a minyan be arranged on an airplane with the cooperation of airline personnel so that it doesn’t disrupt other passengers?