If you wired up elctromagnets in the palms of both hands, on each breast/moob and a big on on the stomach, then by wearing a backpack to hold the necessary charge. Then could you use them as a 'force field'.
Ok in more depth.
1. a batery backpack http://www.stihl.co.uk/STIHL-Products/STIHL-Cordless-Power-Systems/PRO-Cordless-Power-System-for-large-gardens-and-professionals/Li-Ion-batteries-and-chargers/261316-28211/AR-3000-backpack-battery.aspx
2. some magnets thinging of one layer of plastic then one layer or metal coiled up with a current through it then a another plastic then cooling gel then another ring.
3. a switch to turn magnets on and off
4. if you had multiple people the effect would be increased/the need for each magnet to be as powerful would be decreased, even if you didn't stop a projectile you still might be able to slow it down enough to reduce damageespecially considering that if you are allready wearing kevlar it could be built into that to provide an even more powerful effect
what do people think, i couldn't find any magnets as described but intergrating into kevlar might be an idea.