From there, you'll be able to use all of your iDevice's sensors as triggers, from motion through to facial recognition and even GPS. The app doesn't just fire the shutter, either -- it also gives you control over the focus and flash.
In one case people were willing to discuss, residents told The Wall Street Journal that Pakistani soldiers opened fire on a car driving through South Waziristan last fall that didn't pull over as a military vehicle approached from behind, killing the driver.