Got a call from here at about 9:55am CST.  Not sure what it is... no msg left.  The only reason I leave a notice is because there is literally nobody on earth from Chicago, IL that needs to be calling me here in MN, including any companies, so it's probably some kind of telemarketer or my number got on a calling list.

Oops - false alarm, this is just a tech recruiter who somehow came across my resume.   Turns out they did leave a message after all.

Recruiter from KellyMitchell Group.
They called my mobile phone and I did not have a contact number for them (I've never worked with them before).  Recruiter left a 30 second message to see if I was in the current job market, I was a "strong candidate" and to call them back at a different phone number in the same 312 area code, but different prefix and the last four numbers were all zeros.
Found the KellyMitchell Group's website, but I could not verify the identity of the caller who left the message when I searched Linkedin for them or on the company's website.  On Company's website I searched to see if I could identify the job, and came back with 946 results.
So, no idea who called or what they really want.
I'm not in the market for a new job anyway.