Recorded call. Says (paraphrased) "The FBI reports a home burglary occurs every __ minutes. (don't remember how many it said) ...If you will allow us to place a small sign in your yard, we will install a free security system in your home. This installation/service is at zero cost to you. (ya right) ....Press 1 for more info, press 9 to be placed on our do not call list."    I pressed 9 and was immediately disconnected, lol.
I don't know if this is really a security system place or not, but I would certainly never let ANYone in my home from an unsolicited phone call, no matter what they were offering to give away for free.