Final answer:
Sergeant McCabe's violation of a signed confidentiality agreement by disclosing information is considered a serious or flagrant level of misconduct.
Step-by-step explanation:
Sergeant McCabe's violation of a signed confidentiality agreement by disclosing information is considered a serious or flagrant level of misconduct. This violation involves the unauthorized disclosure of classified information that is protected under a confidentiality agreement. Disclosing this information is a breach of trust and can have serious consequences.