Each installation requiring an IVA will receive either a JSIVA or CNOIVA every how many years?

The correct answer is three years because the standard frequency for conducting an Independent Vulnerability Assessment (IVA), which can be either a Joint Staff Independent Vulnerability Assessment (JSIVA) or a Chief of Naval Operations Independent Vulnerability Assessment (CNOIVA), is set at three-year intervals. This timeline allows installations to regularly evaluate their security postures and vulnerabilities, ensuring that any weaknesses are addressed in a timely manner. The three-year cycle provides sufficient time to implement any corrective actions decided upon following previous assessments while also ensuring that the security measures remain relevant as threats and technologies evolve. This approach contributes to maintaining a robust security framework across Navy installations.