This bill amends federal law to allow the Secretary of Defense and military department secretaries to enter into cooperative agreements with California to manage recreational resources on military lands. Specifically, the legislation expands the existing authority to manage cultural resources to also include recreational sites that are part of California's state seashore system and will be operated as California State Park units by the state's Department of Parks and Recreation. The bill does not specify new funding requirements, though it clarifies that cooperative agreements only need funding if required to implement them. The changes apply narrowly to California recreational lands and modify the existing cooperative agreement framework in federal law to accommodate joint management between the military and the state.