A more thorough explanation:

The National Security Agency (NSA) is a part of the United States Department of Defense. Its main responsibility is to protect the information systems of the United States and to gather intelligence information from foreign countries.

The NSA uses a variety of methods to protect information, including creating codes and breaking codes. This helps to keep sensitive information safe from hackers and other threats.

For example, the NSA might use code makers to create a secret code that only authorized personnel can understand. They might also use code breakers to decipher codes used by foreign governments or organizations that are trying to keep their information secret.

The NSA plays an important role in keeping the United States safe and secure. By protecting information and gathering intelligence, they help to prevent threats to national security.