In 1959, the US Navy fired a guided missile from a submarine carrying 3,000 letters; it reached Florida in 22 minutes, but the experiment never became a postal service

In 1959, the US Navy fired a guided missile from a submarine carrying 3,000 letters; it reached Florida in 22 minutes, but the experiment never became a postal service

On a June morning in 1959, a US Navy submarine became an unusual starting point for a postal delivery.