; (B) an evaluation of current Federal and State, local, territorial, or tribal law enforcement authorities to counter the threat identified in subparagraph (A), and recommendations, if any, for potential changes to existing authorities to allow State, local, territorial, and tribal law enforcement to assist Federal law enforcement to counter the threat where appropriate; (C) an evaluation of the knowledge of, efficiency of, and effectiveness of current procedures and resources available to owners of critical infrastructure and domestic large hub airports when they believe a threat from unmanned aircraft systems is present and what additional actions, if any, the Department of Homeland Security or the Department of Transportation could implement under existing authorities to assist these entities to counter the threat identified in subparagraph (A); (D) an assessment of what, if any, additional authorities are needed by each Department and law enforcement to counter the threat identified in subparagraph (A)