The UNLOCK AUKUS Act proposes to streamline defense cooperation with Australia and the United Kingdom under the AUKUS partnership. It achieves this by amending the Arms Export Control Act to modify existing limitations on the export and transfer of defense articles and services. Specifically, the bill exempts certain transfers from congressional notification requirements that would otherwise apply. This legislative change is intended to expedite the process for sharing sensitive defense technology and equipment, thereby enhancing the efficiency of the AUKUS security pact.