A series of photos showing colored water slugs being fired from a missile tube aboard the James Madison-class ballistic missile submarine USS Daniel Boone (SSBN-629) at Mare Island in February 1964 as part of her sea trials, pre-commissioning. These are not colorized and look something like Kool Aid being launched into low Earth orbit.
Commissioned 23 April 1964, Boone served 30 years in the Navy, decommissioned and struck from the Naval Register, 18 February 1994 after completing an amazing 75 strategic deterrence patrols. Her primary weapon was first the 2,500nm-ranged/3-warhead Polaris SLBM then later the 3,200-nm/10 warhead Poseidon C-3 and finally the Trident I C-4 after 1980.
Gratefully, all she ever fired from her 16 tubes in anger was those waterslugs.