Well, after leaving, I completely understood the larger security system that allowed them remain to safe from outside sources.
They had a very long road leading into the Elan complex and at the beginning of that road (where you would turn in) they had a lookout station. Plus, it was practically in the middle of nowhere, so there would be almost no reason for any other car to be using that road, besides staff.
So it would have been hard to drive in without "the houses" being warned first. This actually happened many times. News crews and investigative journalist would show up but by the time they reached the houses, the alert had already been sounded. So all the windows were closed, all primal screaming was stopped, and they would usually choose a few of the higher strength, throw them a basketball, and tell them to go outside because "they earned it!".
So suddenly the place looked pretty normal to any outside observers, who would of course be stopped by Elan staff and asked for search warrants, etc...
Apparently that ruse worked very well.
When I left Elan, I called the police and I was brushed off. So I called the police in Maine and was brushed off. So I called the local police in Poland Springs and was brushed off. So I called a number of journalists and of the few who got back to me, and the even fewer who kept in touch, there was always some moment when they stopped writing or sent me a message saying that they were too afraid to move forward because of the blowback they were suddenly getting.
It was seriously like a movie. I found a book called "Duck in a Raincoat" which was written about Elan and the author explains similar things happening to her. At the end, that author literally fled the US because people were following her and strange things started happening.