@Ryan McCallisterIt is best to diversify your retirement account. 

One young helicopter pilot, one young retired disabled and one young woman brought over by the military. 

 I'm a retired IT guy and following a long time dream of commencing real estate investment.

My goal is to provide income for retirement. 

I love to play golf, and am willing to work extremely hard at this to help me retire earlier and play more!

I am looking to invest in real estate again to supplement my eventual retirement.

My dad recently retired, so he no longer has a traditional income, and though he has decent savings, his credit is spotty at best. 

I come from the IT Consulting world as a Software Engineer, recently retired due to real estate.  

Your risks are that the tenant will go out of business or not renew the lease at the end of the term.This would be my "retirement" strategy, removing me from the active business, but I don't want to do it unless the cap rates are higher, to avoid getting stuck if cap rates increase significantly thus reducing the value of the NNN properties.I don't want to do major rehabs when I'm 75!  

He is planning to retire in about 2 and a half years and while we have saved for retirement, we would like to add to the monies we will have available.