2002 V6 will not start
 

Yesterday my wife went to start the mustang and it just just clicked a little. We were able to jump start it but now it will not start again. The anti-theft light is blinking and when I turn the key none of the displays will show other than the anti-theft. No radio nada. The radiator fan turns and I can hear a small clicking and almost like a whine through the air vents. Think the battery is shot? Is there a way to reset the anti-theft?

Start with the battery.

Dead battery. Either a bad battery or a bad alternator causing a dead battery.