This responds to your Freedom of Information Act (FOIA) request, which was received by this office on 5 February 2016 for “A digital/electronic copy of the NSA old security posters from the 1950s and 1960s.”
The graphic design is …um, mixed.
To navigate the web is to beat a path through a labyrinth of links left by others, and to thereby create associative links yourself, unspooling them like a guiding thread onto a floor already carpeted with such connections. Each thread of connection is unique, individualized: everyone draws their own map of the network as they navigate it.
An excellent article that explodes the ludicrous myth that terrorists like to go around taking pictures of potential targets so therefore photographers are dangerous.