How well does DHS’ Fiscal Years 2020-2024 Strategic Plan address this threat?

In forecasting over the next five years, what do you perceive as being the single greatest threat to the nation’s homeland security posture? Explain the reasoning for your selection. How well does DHS’ Fiscal Years 2020-2024 Strategic Plan address this threat?

DHS’ Fiscal Years 2020-2024 Strategic Plan:
https://www.dhs.gov/sites/default/files/publications/19_0702_plcy_dhs-strategic-plan-fy20-24.pdf