What is a common challenge that officers face when gathering evidence in DWI cases?

Time pressure due to the short-lived nature of evidence is a significant challenge for officers in DWI cases because certain types of evidence can degrade or become unavailable quickly. For example, the effects of alcohol in a driver's system can change rapidly as time passes, which can lead to difficulties in obtaining accurate blood alcohol concentration (BAC) readings. This urgency often requires officers to act swiftly in order to secure evidence, such as obtaining breath or blood samples, before the opportunity to gather accurate information diminishes. Furthermore, the need to document observations and collect evidence promptly is crucial for building a strong case in court, making the timing of evidence collection a critical factor in the outcome of DWI investigations.