could not have been struck on the outside surface because of the manner in which the glass broke and further because of the lead residue on the inside surface. The cracks appear in the outer layer of the glass because the glass is bent outward at the time of impact which stretches the outer layer of the glass to the point where these small radial or wagon spoke, wagon wheel spoke-type cracks appear on the outer surface.[C3-103] Although there is some uncertainty whether the dent in the chrome on the windshield was present prior to the assassination,[C3-104] Frazier testified that the dent “had been caused by some projectile which struck the chrome on the inside surface.”[C3-105] If it was caused by a shot during the assassination, Frazier stated that it would not have been caused by a bullet traveling at full velocity, but rather by a fragment traveling at “fairly high velocity.”[C3-106] It could have been caused by either fragment found in the front seat of the limousine.[C3-107] [Illustration: COMMISSION EXHIBIT NO. 350 Windshield of Presidential limousine.] EXPERT EXAMINATION OF RIFLE, CARTRIDGE CASES, AND BULLET FRAGMENTS On the sixth floor of the Depository Building, the Dallas police found three spent cartridges and a rifle. A nearly whole bullet was discovered on the stretcher used to carry Governor Connally at Parkland Hospital. As described in the preceding section, five bullet fragments were found in the President’s limousine. The cartridge cases, the nearly whole bullet and the bullet fragments were all subjected to firearms identification analysis by qualified experts. It was the unanimous opinion of the experts that the nearly whole bullet, the two largest bullet fragments and the three cartridge cases were definitely fired in the rifle found on the sixth floor of the Depository Building to the exclusion of all other weapons. Discovery of Cartridge Cases and Rifle Shortly after the assassination, police officers arrived at the Depository Building and began a search for the assassin and evidence.[C3-108] Around 1 p.m. Deputy Sheriff Luke Mooney noticed a pile of cartons in front of the window in the southeast corner of the sixth floor.[C3-109] (See Commission Exhibit No. 723, p. 80.) Searching that area he found at approximately 1:12 p.m. three empty cartridge cases on the floor near the window.[C3-110] When he was notified of Mooney’s discovery, Capt. J. W. Fritz, chief of the homicide bureau of the Dallas Police Department, issued instructions that nothing be moved or touched until technicians from the police crime laboratory could take photographs and check for fingerprints.[C3-111] Mooney stood guard to see that nothing was disturbed.[C3-112] A few minutes later, Lt. J. C. Day of the Dallas Police Department arrived and took photographs of the cartridge cases before anything had been moved.[C3-113]