Final answer:
Operators are indeed responsible for all transactions made while their account is logged into the Law Enforcement Agencies Data System (LEADS), underscoring the importance of accountability and data integrity in law enforcement.
Step-by-step explanation:
The statement that each operator is accountable for all transactions occurring while their assigned account is logged on to a terminal accessing LEADS (Law Enforcement Agencies Data System) is true. When operators are logged into LEADS, they are responsible for the security of the information they access and for ensuring that all data transactions made during their session are in compliance with relevant laws, policies, and regulations. This is a critical aspect of law enforcement data handling, as it ensures accountability and the integrity of sensitive information.