MAKING SURE MY SON GETS MY ASSETS BEFORE I MARRY AGAIN

If your son is named as a beneficiary of specified assets, then he is entitled to inherit those assets at your death.  However, if you remarry you need i) a premarital agreement laying out that your new wife does not inherit those assets, and ii) a new will and/or trust providing for your child and your new wife, respectively.  As a spouse, she has marital rights under state law that need to be addressed by the above items.  A lawyer with estate planning expertise in your state is needed.