A couple of comments to some of the posts.
-CVS's did trade institutionally to a degree but the Buyers should know the risk of releasing a large box on 2.5 acres. It's a tall order at best and those Buyers didn't look 10-15 years out and say hey what do we do with this if it closes. This is why pads are generally the better option as you have multiple uses that can fit, no so on a CVS box.
-Regarding closed down McDonald's at such. Yes they close and relocate but nearly, if not, all of them on the market to buy are the newly relocated ones. Once again, do your research on location and growth/longevity of the sub market along with an analysis of where the next intersection that could cannibalize sales would be.
-There are specialized brokers that do these transactions everyday and understand the financial standings of the Tenant just as much as the submarket the site is located in. No deal is perfect and there are inherent risks in anything related to this type of transaction.