My advice would be to treat service members the same as everyone else. 

I have seen legitimately better and worse by a wide margin as local area rents / utilities / taxes / building services each play a big role.Also, from a landlords perspective, it depends on what gets passed on to the tenants (e.g.

Growth: 0%Renter Population: 30+%City Description: The city is the service hub of the county, it contains all the big box stores as well as a struggling downtown.  

I have a local pest control company service 5 units for mice every month

Many times when borrowers are current, the servicers do think everything is alright.

They are a great service to use once you really get going with a large number leads.

Using their services and paying them for it?

That last question is good too but I would not totally rely on the current owner and check with a local professional service or verify it myself.Who the hell is this guy anyway and why should I rely on his answer? 

Not to say that it can't/won't happen, rather it's nearly impossible to put a timeline on it.Plus even if there's a decline some areas are seeing huge growth, so something like 30% drop on equity might only be a few years of less of equity depending on the deal.Historically we're due for a correction, but it's unlikely to be what we saw last time around..

I've stumbled upon a few service companies in my area that only service about a 15 mile radius.