Do yourself a favor: reach out to local law enforcement, introduce yourself, explain what you intend to do (and are doing) so that you become a known commodity to them and IF there is continued unfavorable interaction between you and your neighbor that you have made a record of your concerns and will appear to be the reasonable concerned party in any further action (likely civil if there is no criminal violation). Police will likely recommend you avoid the conflict and find a way to fly without aggravating the situation (conflict resolution = less chance of an escalating neighbor dispute they would become involved in). This may not be the answer you want to hear, but it WILL reinforce your position in their eyes and more importantly in the records management system.
By taking the first step to alert police to a potential problem down the road, you might very well cause a pause in the development of the problem. Even thought your neighbor is on the job, I would avoid approaching he/she off duty out of respect for their personal time and space and so that you get a more objective person involved. They are likely aware of the issue or will be, and if they reach out to you different story.
We call if FloriDUH for a reason . . . . .