Success!
After staying up all night, Mac and I finally finished the security system. In a room in the main building we have six monitors that change every thirty seconds. The cameras are set up around the tree houses and the main building but not into the deeper woods. People still need to be really careful.
I figure a couple people can be in there monitoring at a time and then switch shifts to someone else. We also found some walkie talkies that can be used. It was a bitch getting them to work, but now if there is trouble the people in the security room can let someone outside know.
There aren't enough for everyone or anything, but maybe enough for the security team that Steve is starting to alternate or whatever.