That Time the U.S. Postal Service Tried Delivering Mail By Missile
In June of 1959, the US Postal Service, in conjunction with the US military, shot 3,000 letters from a submarine across 200 miles to a Naval Auxiliary Air Station in Florida. The letters were all the same, since this was...
https://www.neatorama.com/2018/06/18/That-Time-the-US-Postal-Service-Tried-Delivering-Mail-By-Missile/