Just about every firearm leaves specific markings with a bullet and situation when it is actually fired. This sort of markings may be used to ascertain no matter whether evidentiary bullets had been fired from a suspect weapon. Similar procedures are applied to marks remaining guiding at crime scene

1977). Arson investigators have been surveyed regarding how they look into fires and cited interpretation of “alligatoring” as one of the most typical strategies of creating arson. By way of example, if an investigator observed charred wood with “huge, rolling blisters” provi