In the upper right corner of this gif, where is the blood coming out of the legs? All you can see is the white bone.





The actor they used for the injured amputee is this person


If you loose both your legs from explosive trauma half your blood is gone in one minute via the femoral arteries, you're dead after two. Bleeding out is worse with blunt force trauma (like shrapnel) because flesh is torn rather than cut, exposing more arterial and vascular tissue. The human body holds 5 to 6 LITERS of blood. If that really happened, you would see blood EVERYWHERE, the guy would be drenched in it. You would also see what’s called arterial spurting from the injury. Most likely he would vomit after turning ghost white from shock, then turning delirious or passing out.

This is an actor. This is staged. How did they pull it off though?  Check here http://educate-yourself.org/cn/bostonbombingdidyouthink20apr13.shtml