That's funny I have a scanner. Well I'd have two immediate responses I'd first be a bit shocked, then again I'd yell out in excitment " yeah! let's F***ing do this!" From there I'd call up my squad and let them know that the shit has hit the fan. Then I'd mount up and get ready to roll.
Ok... well, I'm always stocked up at home, so i would probably secure my house, let the rest of the population panic, riot and either wind up dead or undead... then when the main chaos is over most people are dead or zombies, i'd get my group together and start the clear up... ... No heroics here, none of that must try to stop them and save the world shit, a person can be intelligent but people are dumb and stupid... In my country people panic buy at the supermarket over the silliest goverment press releases.... LOL... Patience is a virtue