What should be observed about window shades during a fire investigation?

During a fire investigation, it’s important to observe whether window shades are drawn to block the view because this can provide critical information about the circumstances surrounding the fire. Investigators look for indications that could suggest potential foul play or the behavior of occupants. If the shades are drawn, it may point to efforts by individuals to conceal activities, such as nefarious actions prior to the fire. Moreover, the state of the shades can influence how smoke, heat, and flames impact the interior of the structure, thus assisting in establishing the fire's point of origin and the progression of the fire. Overall, the condition of window shades can yield significant insights into the events leading up to and during the fire.