What establishes jurisdiction as reciprocal?

The concept of reciprocal jurisdiction primarily refers to the mutual agreement or recognition of legal authority between different branches or levels of government. In this context, the correct answer highlights that one branch of the armed forces has jurisdiction over another, which exemplifies how military jurisdictions are often interdependent.

In military law, each branch operates under the Uniform Code of Military Justice (UCMJ), and jurisdiction can move seamlessly between branches in certain circumstances. This reciprocal nature ensures that members of the armed forces are held accountable under the same legal framework, regardless of the specific branch to which they belong. This kind of jurisdiction is critical for maintaining order and discipline within the military and allows for cooperation and coordination between forces.

The other choices do not appropriately capture the essence of reciprocal jurisdiction. Federal and state governments sharing authority describes collaborative jurisdiction rather than reciprocal jurisdiction. Local agencies overriding federal jurisdiction suggests a conflict rather than mutual recognition. Finally, the reference to reserved powers addresses federalism and the limits of governmental authority without specifically addressing the relationships necessary for reciprocal jurisdiction.