This story will be updated with new information throughout the day. MEMPHIS, Tenn. -- The Tyre Nichols federal trial against three ex-officers is moving into its fourth week, with testimony from witnesses in the defense's case. Defense attorneys announced on Monday morning that Tadarrius Bean and Demetrius Haley rest their cases. Witnesses testify force used on Tyre Nichols was justified Justin Smith's attorney, Martin Zummach, has asked another witness to the stand as he continues to build Smith's case. Jared Zwickey, a California-based use of force trainer, testified on Monday that Justin Smith's actions as seen on body camera footage, are within national and Memphis Police Department policy. Zummach questioned Zwickey about the dangers officers may face if a suspect resists and has not been searched. Zwickey said he would classify the situation as "very high risk," and described officers as typically being "very fearful" in such situations. Zwickey informed the jury that Smith was the officer who called for medical help after the beating. Zwickey agreed that if an officer were to tell EMTs on the scene of an arrest that the suspect's oxygen is low, he is "absolutely" assisting in providing medical care to the wounded suspect. National and MPD standards were heavily discussed, with Zwickey agreeing that open-hand and closed-hand strikes to the face are consistent with both policies. Tyre Nichols trial: Prosecution rests, defense begins its case Zummach also made the argument that someone who is under the influence of drugs or alcohol will have a higher pain tolerance, which could explain how a suspect could continue resisting after being pepper sprayed or tased. Zwickey agreed with the statements. Tadarrius Bean, Demetrius Haley, and Justin Smith are facing charges of federal civil rights violations, conspiracy, and obstruction in connection to Tyre Nichols’ death in 2023.