Laws and policies are necessary to direct officers to intervene in situations of excessive force. Maintaining safety is achievable, but only if officers (a) have an explicit responsibility to intervene, (b) stop the excessive force, and (c) face severe consequences for failing to do so. It is clear that actionable, national-level policies are needed. Absent a standard, Americans, particularly historically marginalized groups, risk the severe threat of harm and even death, as many recent events happen. This is the second in a series of action briefs on police reform.