
thumb|The W54 nuclear warhead was used in the man-portable Davy Crockett (nuclear device)|M-388 Davy Crockett projectile. The unusually small size of the warhead is apparent. thumb|The SADM (B54) demolition charge version of the W54 in its carry bag thumb|SADM hard carrying case thumb|A United States Army Special Forces|U.S. Army Special Forces [[paratrooper with the Green Light Teams conducts a high-altitude low-opening military freefall jump with a MK54.]]
thumb|The W54 nuclear warhead was used in the man-portable Davy Crockett (nuclear device)|M-388 Davy Crockett projectile. The unusually small size of the warhead is apparent. thumb|The SADM (B54) demolition charge version of the W54 in its carry bag thumb|SADM hard carrying case thumb|A United States Army Special Forces|U.S. Army Special Forces [[paratrooper with the Green Light Teams conducts a high-altitude low-opening military freefall jump with a MK54.]]
The W54 (also known as the Mark 54 or B54) was a tactical nuclear warhead developed by the United States in the late 1950s. The weapon is the smallest nuclear weapon in both weight and yield to have entered US service. It was a compact implosion device containing plutonium-239 as its fissile material, and in its various versions and mods it had a yield of .
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).