by another command or agency. Appointing authorities and investigating officers must ensure that investigations do not hinder or interfere with criminal investigations or investigations directed by higher headquarters. In cases of concurrent investigations, investigating officers should coordinate with the other command or agency to avoid duplication of effort wherever possible. If available, the results of other investigations may be incorporated into the AR 15-6 investigation and considered by the investigating officer. Additionally, an investigating officer should immediately coordinate with the legal advisor if he or she discovers evidence of serious criminal misconduct.
C. CONDUCTING THE INVESTIGATION
1. Developing an investigative plan.
a. The investigating officer’s primary duty is to gather evidence, and make findings of fact and appropriate recommendations to the appointing authority. Before obtaining information, however, the investigating officer should develop an investigative plan that consists of (1) an understanding of the facts required to a conclusion, and (2) a strategy for obtaining evidence. This should include a list of potential witnesses and a plan for when each witness will be interviewed. The order in which witnesses are interviewed may be important. An effective, efficient method is to interview principal witnesses last. This best prepares the investigating officer to ask all relevant questions and minimized the need to re-interview these critical witnesses. As the investigation proceeds, it may be necessary to review and modify the investigative plan.
b. The investigating officer should begin the investigation by identifying the information already available, and determining what additional information will be required before findings and recommendations may be made to the appointing authority. An important part of this is establishing the appropriate standards, rules, or procedures that govern the circumstances under investigation. The legal advisor or other functional expert can assist the investigating officer in determining the information that will be required.
2. Obtaining documentary and physical evidence.
a. The investigating officer may need to collect documentary and physical evidence such as applicable regulations, existing witness statements, accident or police reports, and photographs. This information can save valuable time and effort. Accordingly, the investigating officer should obtain this information at the beginning of the investigation. In some cases, the information will not be readily available, so the request should be made early so the investigating officer may continue to work on other aspects of the investigation while the request is being processed. The investigating officer should, if possible and appropriate, personally
