Factual error: After the investigation the barrier tape (crime scene tape) would have been taken down. Also, there is no reason to have barrier tape inside a residence if the outside is already marked. (00:29:28 - 00:30:00)
Suggested correction: There could be legitimate uses of crime scene or barricade tape inside of a structure, such as roping off an area that forensics has not yet got to or finished. There might be a lot of officers walking through the house, so the tape could be used to restrict their movement to prevent contamination of evidence. As a warning that only authorized personnel may enter, news reporters and others would know to stay out.
Good suggestion but wrong. If that was still an active crime scene there would have been officers outside standing guard to make sure no-one will/can go inside. BTW: Retired SAPD.
I don't doubt that your former SAPD had a particular procedure, but not all police departments follow the same procedures and there are often gaps between theory and practice. Furthermore, many law enforcement agencies make a distinction between "outer perimeter" and "inner perimeter." The inner perimeter (typically where physical evidence has been located) may be taped off with additional yellow tape, but the trend has been toward using red tape to make it more distinguishable from the yellow.
I don't know where you are getting your information but I also don't know what every agency use in the United States. From those I have seen (26yrs with the SAPD) I have only seen black on yellow. Red on white or blue on white is usually European. Like you said: "many law enforcement agencies", well we didn't and that is what I am basing my experience and expertise on. We only use 1 outer perimeter barrier that was manned by officers and they checked everyone before going inside the perimeter.
