My tenants were calling and texting to tell me that there were several police and an ambulance outside one of my units. 

Most people in hotels are not from the neighborhood and they usually don’t live in the neighborhood, most people in apartments are and do.How scared were you really when you called BP instead of the police at 4am?

Has anyone ever used a trail cam and gotten good enough photos of trespassers to be of use to the police? 

VRBO will remove fake posts if alerted to them, but they're not the most pro-active at policing them.VRBO can be a good source of tenants, make sure you have very good photos, as your photos can be the difference between someone renting from you and from the next property on the list.

We are awaiting paystubs, police report (she offered to provide).

I am currently a police officer in Indiana in a city with roughly 60k people that has fallen on some hard financial times over the past 20 years when GM left the city.

Flash forward to a little over a year and a half ago, I am married have a "good" full time job as a police officer and have started a family.

You can call local city, police Dept and post office - ask the people who deliver mails in the area about the property and  neighborhood environment of subject property.  4) If I live near by, drive around and talk to the  neighbors.  

I would also say that if he is using drugs in the home or has drugs in the home you could call the police.

Meyers ( lehigh Acres) on brand new or near new constructed homes ( minus Chinese drywall) for 25 to 40k each.. these homes 5 years before were selling for 250k.. in my mind in that time in space.. that was probably one of the cheapest places in the first world to live.. brand new our near new home for 30k  US health fire and police..