This is a robo call that sounds very much like a human.  If you answer it will begin a speech about calling on behalf of the florida troopers and fireman's association.  This is a telemarketing scam.  You can read about this and other charity scams here:
https://www.consumer.ftc.gov/articles/0085-fu ... nd-firefighters

Blocking them is a waste of time too.  On Saturday, I picked up thinking it was another in a long list of political calls and they were calling for AMVETS which is a scam charity that was busted a few years ago.

called at 1508 to say nothing and to leave no caller id

786-724-2012 called 12:17pm on 7 Nov 2016. Robo call that sounds very much like a human. AMVETS which is a scam charity. Also calls on behalf of the florida troopers and fireman's association.  VoiP V10712171200150