you if you recognize that? >> i do. >> how do you recognize that? >> the daily case number, the exhibit number and my initials. >> and what what do you recognize it to be? >> it is one fired 9 millimetre lugger cartridge case. >> when you receive a firearm in a fire casing, are you able to determine whether or not that particular casing came from that particular firearm? >> yes. >> how can you do that? >> with a submitted firearm and magazine that i will use laboratory and/or evidence ammunition to test fire that pistol. i will then collect the fired cartridge cases and compare those microscopically to the evidence cartridge case to the cases that i received. >> did you do that with the shell casing or cartridge case in this case and the cal tek pistol? >> yes. >> what did you find? >> the cartridge case was fired with the pistol. >> did you also receive some bullet trafficmentes in this case? >> yes, i did. >> your honor, may i again