Two things, as I just had this happen to me, but I was home and had access to a voltmeter and a battery charger.
I pushed the ignition switch, heard a couple loud clicks from under the hood, then nothing. Everything seemed to have good power, dash, headlights, etc. Clicking but no start.
We were in a hurry so I put it on the charger while we were out for about 2 hours. When we got back I measured the battery at 12.8v.
Not real good for being on a 10amp charger for 2 hours.
At this point I could start the truck, now I have 14.8v at the battery, telling the alternator was doing it's job.
My battery is 5-6 years old.
Drove to local battery shop, load tested - failed. Bought an ACDelco Gold 42-month battery, been fine ever since (about 3 days now).
The 2 things I'm thinking are bad battery or bad starter. If I were closer I'd bring some toys to help you out.
As for jumping, my battery charger has a "jump start" mode, but obviously not powerful enough to turn over the Hemi. I still needed to use the "jump" mode AFTER charging for 2 hours. Your best bet might be to find someone willing to charge your battery with cables for a little bit before trying again. Might be enough to get you home.
Good luck.
EDITED TO ADD: it could also be a failed WIN module, located behind the ignition switch. That was the other thing. I've heard about them failing. I'm afraid I don't know how to get you home.