The Mayor of Washington Township speaks candidly about what he things is going on. He sent a letter to our governor signed by 21 mayors (including himself). Apparently some officials suggested in a press conference (I did not see) they are helicopters, which the mayor dismisses because he knows better based on his expertise about them. Here's the video clip:
New Jersey mayor demands answers for drone sightings
Bob, I'm not sure I like the idea of air taxis flying around, but hey...welcome to The Fifth Element! My concern about that is assuaged a little though because trained commercial pilots are allegedly going to be the ones who fly them. I'm aware that Amazon is working on their drone delivery program. Maybe all this unfavorable press about night flying drones will discourage them from night deliveries.
Yeah, I think we are almost always uneasy about mysterious objects in the sky or otherwise. There may be others who think differently, but I think the FBI, Norad, and top-secret officials know what these are. You don't get to be head of these agencies with a low IQ, little experience, and just shrug your shoulders when you don't have answers.
For them to react passively and take no protective measures, tells me that they know more than they are telling us. It's a likely possibility that it could be defense related. The government contracts with a lot of private companies who test and develop technologies, machines, and equipment to aid the various government agencies, from large companies like Boeing, and Lockheed, down to even small innovative tech companies.
Normally the military won't sign a contract without a company's proof of concept, meaning that it has been tested in all possible conditions the government may need it for. Like it or not, drones are taking off (Pardon the pun), and they are going to be used for military applications, deliveries, inspections, entertainment, spraying crops, and a whole lot more.
For the government to say that these are not theirs would be technically correct, as they may not have signed any contract, even though they may be aware of the testing, and know they pose no threat.
I have wondered: "Why New Jersey, and coastal states?", and I really don't know, unless it might have something to do with enhancing border security, or that is where the company is located who is doing the testing. They may have to do day and night flights, also in inclement weather, and perhaps around complicated landscapes, to show the vehicle is capable of delivering on it's intended purpose. It may even turn off it's lights to avoid detection because that would be a valuable feature, as well as not displaying any heat trace, and also be capable of impressive speed.
I know it's frustrating, but, as you said, it may just be a glimpse of the crowded skies we will all have to live with. I'm sure some clever, investigative journalists are on the hunt for a breaking story and will eventually crack the case.