What does the term "trailer" refer to in fire investigation?

In the context of fire investigation, the term "trailer" specifically refers to materials that are used to spread fire. This could include accelerants or other combustible materials that a person might intentionally use to help a fire grow more quickly or spread to other areas. Understanding what constitutes a trailer is crucial for fire investigators, as recognizing these materials can provide insight into the cause and origin of a fire, particularly in suspicious or incendiary incidents.

This definition emphasizes the role of trailers in the physical dynamics of fire spread and their potential implications in fire investigations. Fire investigators look for evidence of such materials to determine whether a fire was accidental or deliberate, which helps guide their conclusions and subsequent actions.