We covered the XStat Rapid Homeostasis System back in December, when it first received FDA approval, but now, the device has saved its first life on the battlefield. The syringe is filled with cellulose sponge tablets that are coated with a homeostatic agent that grows rapidly to fill the wound. They absorb blood pumping into the area, and plug the cavity to allow clotting to begin near instantly. In its first real world application, a soldier’s femoral artery was damaged by a gunshot wound, and the XStat syringe was used to fill the wound, enabling him to become stable and be transported to a definitive care facility. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one of the ultimate grappling hook, and just how difficult it is to use one.