1. Short title This Act may be cited as the Global Engagement Center Authorities Act of 2018 . 2. Global Engagement Center Section 1287 of the National Defense Authorization Act for Fiscal Year 2017 ( 22 U.S.C. 2656 note) is amended— (1) by amending paragraph (2) of subsection (a) to read as follows: (2) Purpose The purpose of the Center shall be to direct, lead, synchronize, integrate, and coordinate efforts of the Federal Government to recognize, understand, expose, and counter foreign state and non-state propaganda and disinformation efforts aimed at undermining or influencing the policies, security, or stability of the United States and United States allies and partner nations. ; (2) in subsection (b)— (A) by amending paragraph (1) to read as follows: (1) Direct, lead, synchronize, integrate, and coordinate interagency and international efforts to track and evaluate counterfactual narratives abroad that threaten the policies, security, or stability of the United States and United States allies and partner nations. ; (B) by amending paragraph (4) to read as follows: (4) Identify current and emerging trends in foreign propaganda and disinformation in order to coordinate and shape the development of tactics, techniques, and procedures to expose and refute foreign propaganda and disinformation, and pro-actively support the promotion of credible, fact-based narratives and policies to audiences outside the United States. ; (C) by redesignating paragraphs (6) through (10) as paragraphs (7) through (11), respectively; (D) by inserting after paragraph (5) the following new paragraph: (6) Measure and evaluate the activities of the Center, including the outcomes of such activities, and implement mechanisms to ensure activities of the Center are updated to reflect the results of such measurement and evaluation.