Which of the following is a concern for complex investigations?

In the context of complex investigations, transportation is indeed a significant concern. The logistical aspects of transporting evidence, specialists, and personnel are critical to ensuring that the investigation can proceed efficiently and effectively. When dealing with complex fire scenes or incidents, investigators must consider how to move equipment to and from the site without compromising any evidence. Accessibility to the scene can be challenging, particularly in large-scale incidents where multiple agencies may be involved, and coordinating transportation becomes a vital part of the investigation process.

Additionally, managing transportation logistics helps maintain the integrity of the investigation. Delays or issues in transporting evidence can lead to contamination or loss of important information that could be crucial in understanding the cause of the fire or the events surrounding it. Hence, the importance of transportation in the context of complex investigations cannot be understated, as it directly impacts the investigation's effectiveness and overall outcome.