colored water slugs being fired from a missile tube aboard the Daniel Boone (SSBN-629) at Mare Island in February 1964.
USN photo # 61778-4-64, courtesy of Darryl L. Baker., via Navsource http://www.navsource.org/archives/08/08629.htm
laststandonzombieisland
Weapons, Wars, Preparation and Security from a recovering gun nut turned bad writer