But we can expect, at the least, that we will hear the officers' own statements about what happened on the day Gray was arrested. The Fifth Amendment does not apply, and defendants in trial board proceedings can be compelled to answer questions — presumably these three already have been. Other rules of evidence are different in trial boards than in court — hearsay evidence, for example, is admissible, so long as it is deemed to be credible. And finally, the standard of guilt is the "preponderance of evidence" rather than "beyond a reasonable doubt." The judges in the trial board need only determine whether it is more likely than not that an officer violated departmental policy.