The assessments identify the requirements for additional OPSEC measures and required changes to existing ones.[4] Additionally, OPSEC planners, working closely with Public Affairs personnel, must develop the Essential Elements of Friendly Information (EEFI) used to preclude inadvertent public disclosure of critical or sensitive information.[5] The term "EEFI" is being phased out in favor of "Critical Information", so all affected agencies use the same term, minimizing confusion.