We've seen an uptick in Staples boxes in the hub. Of course that means, plenty of office paper smashed open and flying around, and of course the empty 16x10 boxes that are crushed like an accordion.
the only reason for increased amazon ndas that I can think of is amazon's SuperDuper Prime Wednesday. Prime comes with free two day shipping. Amazon probably couldn't process all those orders in time for 2 day ground shipping. So the orders they couldn't get to right away got shipped out Thursday night to become Ndas in order to satisfy their two day delivery window.