Tribal governments in the United States, which are recognized as sovereign entities, typically have their own police forces. These police forces are responsible for maintaining law and order within their respective tribal lands. However, tribal governments do not have their own armies, navies, or air forces. The establishment of military forces such as armies, navies, and air forces is generally the purview of national governments, and in the United States, these are managed by the federal government.
The answer is police forces.
Tribal governments do not have their own armies. The establishment and maintenance of an army are typically the responsibility of a national government.
Tribal governments do not have their own navies. Like armies, navies are managed by national governments.
Tribal governments often have their own police forces. These forces are responsible for law enforcement within tribal lands and are a key aspect of tribal sovereignty.
Tribal governments do not have their own air forces. Air forces are part of the national military structure.