Allows limited exceptions to existing prohibitions on procurement, operation, and use of Federal funds for certain covered unmanned aircraft systems (UAS) tied to covered foreign entities, and gives the Secretary of Energy expanded authority over classified tracking/accounting matters and the protection of specified nuclear facilities and assets. The changes amend FY2024 National Defense Authorization Act provisions and the Atomic Energy Defense Act to shift certain decision authority to the Secretary of Energy (or their designees) and to create narrowly described exemptions, though the excerpt does not show full insertion text or implementation details.