Lauer, Santana suggested that he was giving media interviews in part to protect himself against retribution. At some point I thought about staying anonymous, and do n't show my face, do n't talk about it. But... if I would n't show my face, everybody over there knows, including the police, who I am, Santana said. Santana did not say whether he had received threats. His attorney, Todd Rutherford, said Santana's video would be useful in an investigation -- not only into the shooting but also into whether Scott received prompt medical attention. In the last half of the video, a second officer appears to examine Scott with gloved hands. Witness video, official accounts raise questions Santana said after he stopped recording, he watched for a few more minutes but never saw anyone perform CPR. A police report says a third officer -- not shown in the video -- reported seeing an officer administering first aid, and that the third officer approached and helped that person with first aid and CPR. On Wednesday, asked whether CPR was performed on Scott, North Charleston police Chief Eddie Driggers said: In the end of it -LRB- the video -RRB-, what I saw was -LRB- what I -RRB- believed to be a police officer removing the shirt of the individual and performing some type of life-saving -LRB- procedure -RRB-, but I 'm not sure what took place there. A timeline of events CNN's Jason Hanna,