Dr. Y's group used a high-speed digital camera with a top frame rate of 100,000 frames/sec for this experiment. The high speed camera produced a precise and time-sequenced record of the penetration process as follows. The moment the bullet first hit the undershirt, the undershirt began to deform, while the projectile pushed the undershirt forward. The bullet, with the undershirt covering its nose, then impacted and penetrated the shirt, and pushed a part of the undershirt through the bullet hole, forming a nose-like deformation. The length of the nose kept increasing, until the undershirt reached its elastic limit and was penetrated by the bullet. After the bullet passed through the undershirt, the ``protruding nose'' retracted back to its original position behind the undershirt, through the hole in the shirt. If the impact velocity was slightly below the threshold velocity for penetrating both layers of fabrics, then the bullet did not have enough kinetic energy to stretch the nose on the undershirt beyond its elastic limit, resulting in the tell-tale Pinocchio's nose. With the slow-motion pictures, there can be no doubt that, if the lead bullet penetrated Chen's undershirt on exit, then it must have also penetrated Chen's shirt after it penetrated the undershirt.