Class characteristics used in firearms comparison are traits that have measurable features (Firearms & Tool Mark, n.d.). There are a few characteristics that are identified when trying to distinguish the class of the firearm, the general rifling which is the caliber of the barrel, the dimensions of the impressions inside a gun barrel and the directions of the twist of the rifling grooves (Firearmsid). Once the firearm investigators complete this task they will be able tell what type of weapon was used at the crime scene. The next and final step is the individual characteristics comparison, where the examiners try and find a match for the firearm used (BulletID.com, n.d.).). All firearms have their own unique individual markings that they leave behind from the bullets and casings.
The scholarly journal provides an overview of mass shootings. It talks about all the killers, the guns used, how they were obtained, and the victims. The Journal provides a lot of information to give a summary of all mass shootings. The journal gives me a brief and important information to know more of the cases in mass shootings. All of the information in the journal provides facts to give into my topic.
These include a physical examination and history, a complete blood count (CBC) with differential, peripheral blood smear, blood chemistry studies, a bone marrow aspiration and biopsy, cytogenetic analysis, and a JAK2 gene mutation test. The three that are most likely to be used are the physical, the complete blood count, and the biopsy. A physical examination and history is simply an examination of the body, evaluating an individual’s overall signs of health in search of anything abnormal. This will also involve asking about the patient’s past health habits and illnesses. A complete blood count is a procedure in which the patient’s blood will be drawn and evaluated for the amount of hemoglobin (protein that carries oxygen) in the blood, the quantity of the red blood cells, white blood cells, and platelets in the blood, and how much of the blood sample is composed of red blood cells.
At a news conference, Michael Bouchard of the U.S. Bureau of Alcohol, Tobacco and Firearms told reports the rifle “has been forensically determined to be the murder weapon”. Investigators were able to match Muhammad’s rifles to 11 of the 14 shootings by a series of ballistic tests. First the bullets were recovered from the victims. When the rifle was found they were able to match them up by the markings or rifling impressions pattern on the fired ammunition by the barrel of the rifle. The rifling pattern in the barrel that fired a particular bullet can be determined by counting the number of groove or land impressions around the circumference of the bullet.
However, not all forensic scientists are the same. Criminalists/crime scene investigators are a general name for forensic scientists. Forensic biologists/chemists are scientists who deal more on the DNA, chemical and other substance side of the crime scene investigation. Forensic computer examiners or digital forensic analysts deal more with technology based crimes like hacks, scams and identity theft. Overall, forensic scientists are able to collect information and use it to help solve or further investigations.
The 2007 film Hitman had "gaming-like” features in many ways. In both the film and the game, the missions are set up in such a way so that Agent 47 can their attack the enemy with gun blazing or strategically planning out a standard method of killing in order to make it look like an accident. In both the film and the movie, Agent 47 uses a whole variety of guns, pistols, rifles, swords, explosives, and poisons. He tries to dispose the enemy by carefully observing these highly protected targets. In both the film and the movie, there is a notoriety system.
Lastly, A finer grade of powder was poured from a different powder horn into the pan of the rifle or musket, the hammer pulled back and the frizzen was closed. The weapon was then ready to be fired.” Having a musket would be a huge advantage in war, but to have a musket you would need a bullet mould; more specifically a scissor-type bullet
For example, on July 29, 2001, six officers were escorting an engine to another area. At one point, the engine exploded, immediately killing three of the officers and severely injuring two to which they died from their wounds. The last officer had also received major injuries, but because he was wearing a bulletproof vest his vital organs were protected, which prevented shrapnel and small bits of metal from injuring him. (policechiefmagazine.org, Sergeant Adrienne Quigly, 10/10/2008) Bulletproof vests have other advantages than just protecting the wearer from bullets, like protecting vital organs and body from projectiles and external
There are some of the classic patterns such as directionality, cast-off bloodstains, swipe marks, pattern transfer, saturation, arterial patterns, drip patterns and other examples of bloodstain dynamics, which should be noted and documented by the crime scene investigator, when at the scene. (Bloodstain Pattern Analysis). (n.d.). Recording the bloodstain patterns, in the scene, is one of the important documentation of the investigation. This documentation of the investigation should be accomplished before anything is touched or moved at the scene.
Fourthly, Forensic Anthropology is important to crime scene investigation where it makes it possible to determine age, height and gender of human remains found at a crime scene ("Importance of Forensic Science in Criminal Investigations and Justice," 2018). On a crime scene, human remains can be found whether decomposed, burned, buried, mutilated, destroyed from an accident or otherwise unrecognisable ("Importance of Forensic Science in Criminal Investigations and Justice," 2018). Forensic Anthropology is a study that identifies these persons from their skeleton, bones or unrecognisable state that was left on the crime scene ("Importance of Forensic Science in Criminal Investigations and Justice," 2018). The remains of bones that are left on the crime scene are collected by the CSI and sent to a forensic lab. It is analysed in a forensic lab where the sex can be determined by using the pelvis.
The size range is dependent on the quantity of available blood, the caliber of the weapon, the location and number of shots and impeding factors, such as hair, clothing, etc. Impact spatters of this type is most commonly associated with gunshot, but may also be produced in cases involving explosions, power tools, high speed machinery injuries, and high speed automobile collisions. Forward spatter, which is associated with an exit wound, no forward spatter is produced in cases where the projectile does not exit the body. The mechanism that creates impact blood spatter will create a variety of sizes of bloodstain that would fit into the categories with beating and stabbing events, as well as spatter produced by expiration blood. Impact spatter associated with beating and stabbing events generally exhibits a size range from 1 to 3mm in diameter.
Autopsies should include full-body x-rays. Collect evidence, including: Suspected bomb components and fragments, including those recovered from victims. Suspected materials used to construct and transport the explosive device(s) (e.g., tape, batteries, manuals, vehicles). Crater material. Residues and other trace evidence (using swabbing techniques).