Information for nearly anything and everything is available somewhere if one knows where to look or has the “creativity” to obtain said information oneself. As many have commented twitter is just the mass discovery vector that those who did not know how to find this particular type of data are now made aware from a tweet. With plane spotting as my back deck hobby, along with my proximity to interesting aircraft, for years I have spelunked the web to find better sources given that some tracking services are paid by aircraft owners to remove their data. Another option is the secondary data that relates to air travel designating restrictions for VIPs, mainly political of course. Fitting timing on this hn inquiry as just yesterday our area had an out of band flight restriction in the afternoon for several hours which was for 46, or an immediate family member, from past correlation to data and news events. Then last evening nearing the conclusion of the flight restriction the house was shaking from Air Force One having just taken off from New Castle Delaware and flying nearly right over our house at what seemed like full throttle climbing through to altitude. As with anything, data can be the problem or the solution, it just depends on one's intent.