TSA “Quiet Skies” traveler surveillance program

Boston Globe about a previously secret TSA program of illegal surveillance of innocent air travelers, “Quiet Skies”.
https://apps.bostonglobe.com/news/nation/graphics/2018/07/tsa-quiet-skies
from https://www.hasbrouck.org
analysis in the Identity Project blog of what is and isn’t new about this program, whether it’s legal, and what is suignificant about it:

https://papersplease.org/wp/2018/07/29/federal-air-marshals-blow-the-whistle-on-tsa-quiet-skies-traveler-surveillance-program/