Which of the following is NOT a requirement after a Taser deployment?

Taking a photo of the scenario is not a required step after a Taser deployment. While documenting the incident is important for legal and procedural purposes, capturing photographic evidence is usually encouraged but not mandatory.

In contrast, documenting the cartridge serial number is essential for tracking and accountability. It helps maintain accurate records of the Taser devices being used and ensures that they can be traced if needed. Collecting identification tags for the expended cartridge serves a similar purpose, providing important information about the equipment's usage and ensuring proper disposal or return procedures are followed.

Marking the evidence for contamination is also crucial, especially in legal contexts, as it maintains the integrity of the scene and any collected evidence. This ensures that the data remains uncontaminated for potential investigations or court proceedings.

While taking a photo can provide invaluable context and might assist in further investigations, it does not hold the same level of necessity as the other actions, which are more directly related to accountability and evidence preservation after a Taser deployment.