I need help as for How to answer the three questions

Scena rio: It is 5:00PM and you are dispatched to investigate a report ofa motionless man (victim) laying in the intersection of Birch and Oak Streets. You arrive moments later to nd a Blonde man laying face down with what appears to be a severe bullet wound to his head. Based on the severity of the wound and the lack of any vital signs, you declare the man as deceased and cancel the responding ambulance. You then request that additional ofcers come to the scene to assist you. About 10 feet away from the victim is a red Honda just behind the crosswalk lines on eastbound Birch Street, There is no one in the car, but the engine is running. There are a couple of spectators gathered on one corner of the intersection near a bus stop that is located in front of a light rail station. Within a minute of your arrival, a woman (witness 1} drives up to your location and tells you that she had just seen someone driving the red Honda a few minutes ago. Witness 1 goes in to tell you that she saw the driver of the red Honda exchanging offensive hand gestures and gang signs while yelling insults at another male as the two drove eastbound on Birch Street for about a mile. The witness stated that the offensive communication escalated and one of the drivers tried to swerve into the other. Then one car started chasing the other car, and she lost sight of them. She then notices the victim laying on the ground, and yells, "Oh my goodness, that's one of the guys that were yelling at each other, what happened to him." Witness 1 tells you that she couldn't remember the type of car driven by the other male, but she does know it was purple and had a partial plate number of 7HGF31 She couldn't get the last digit of the plate. She did get a pretty good look at his face. She tells you that the driver of the purple car had a shaved head and had several tattoos on his face. She also thinks she could identify him if she saw him again. At this point. you haven't spoken to anyone else at the scene. so you don't know if there are more witnesses. About now your backup ofcers arrive, and you have at least ? ofcers there to assist you. You broadcast a BOL (be on the lookout} over the police radio and describe a purple car driven by a male with a shaved head and tattoos on his face as the possible suspect in this shooting. As of this point, you have only the statement of someone who may have seen the events that led up to the shooting. but no one who has seen the actual shooting, nor anyone who can conrm that the blonde male that Witness 1 saw earlier was involved in the shooting. The intersection is large, with three lanes in each direction, and but no businesses or schools nearby that are likely to have surveillance cameras. On one corner is a park with an open grass eld. On the another corner is large vacant lot with several blue tarps acting as shelter for homeless individuals. On another corner is a Tesla charging stations with several chargers and a four cars there being charged. however no one is in any of those cars. On the last corner is a light rail station with a bus stop in front of it, however neither a train. nor buses are there now. Blood is pooling around the victim's body, and there is a opened Corona beer can laying right next to a wrinkled edition of the High Times magazine about 15 feet away. There are also 8 expended bullet casings about 3 feet from those other items. Assignment As the rst responding ofcer to a homicide, you are in charge of the case and scene until relieved by a detective or ranking ofcer. You have the responsibility to protect the crime scene, locate witnesses, locate evidence, and begin the initial investigation. I. What are your top priorities and the first actions you'll take? 2. What pieces of evidence will you identify and protect at the scene? 3. What tasks will you delegate to the backup ofcers on scene