BE AWARE of residents who are in the country on a student visa but never appear to leave the apartment for classes.
VERIFY THE IDENTIFICATION used to lease an apartment, especially because a lease can be used as proof of residency to obtain government ID.
CALL THE REFERENCES of an applicant for an apartment and verify the information provided.
BE ALERT to things that seem out of the ordinary, such as gunpowder, PVC or metal piping, nails or dismantled kitchen timers — items that can be used for pipe bombs.
Interesting. Gunpowder is suspicious. Three of these four aren't even for your average apartment dweller; they are for the property managers/leasing managers.