A more thorough explanation:

The National Cemetery Administration (NCA) is a part of the U.S. Department of Veterans Affairs. Its main responsibility is to operate national cemeteries and provide headstones for unmarked graves of veterans all over the world. The NCA also gives grants to states for establishing and maintaining veterans' cemeteries.

For example, the NCA operates Arlington National Cemetery in Virginia, which is the final resting place for many American heroes, including President John F. Kennedy and his family. The NCA also provides headstones for veterans buried in private cemeteries and maintains national cemeteries in other countries, such as the American Cemetery in Normandy, France.

The NCA's grants to states help establish and maintain veterans' cemeteries, such as the Southern Nevada Veterans Memorial Cemetery in Boulder City, Nevada. These cemeteries provide a final resting place for veterans and their families, and the NCA ensures that they are well-maintained and respected.