71.   Two small-caliber shell casings lay nearby.

72.   When a gun is fired, it creates a unique mark on the bullet and the shell casing.

73.   Whether the shell casings came from ATF agents or FBI agents is still unclear.

74.   While seven shell casings were found, witnesses told of hearing more shots fired.

75.   With each shot, the unit recoils and ejects a shell casing.

76.   Police lost key evidence by removing bodies of the victims without noting the positions of the corpses or picking up shell casings, the report said.

77.   Police also are starting to tap into Drugfire, an FBI-developed system that computerizes cartridge shell casings.

78.   Police found shell casings in the club from two guns.

79.   Police recovered two shell casings on the scene.

80.   A ballistics expert, Pierre Deloume, said bullets and shell casings found at the scene likely came from a Czech-made automatic pistol.