risk to an aviation or surface transportation entity. (2) Explosive and explosive devices or attacks involving the use of explosives that may cause catastrophic damage to an aviation or surface transportation system. (3) Chemical or biological agents being released in either aviation or surface transportation systems. (4) Cyberthreat actors seeking to undermine confidence in transportation systems or cause service disruptions that jeopardize transportation security. (5) Unmanned aerial systems with the capability of inflicting harm on transportation targets. (6) Individuals or groups seeking to attack soft targets, public areas, or crowded spaces of transportation systems, including attacks against Transportation Security Administration employees and other security personnel. (7) Foreign actors seeking to exploit vulnerabilities posed by the inconsistent or inadequate security screening protocols at last point of departure airports with direct flights to the United States. (8) Information sharing challenges within the Federal Government and among partner governments. (9) Information sharing challenges between the Administration or other relevant Federal agencies and transportation stakeholders, including air carriers, airport operators, surface transportation operators, and State and local law enforcement. (10) Growth in passenger volume in both the aviation and surface transportation sectors. (e) Mitigation Not later than 120 days after the completion of the analysis required under subsection (a), the Administrator of the Transportation Security Administration shall develop, as appropriate, a threat mitigation strategy for each of the threats examined in such analysis, and— (1) assign appropriate resources of the Administration to address such threats, based on calculated risk