1952 - Johnston Island area
Conducted as part of Operation Dominic was a series of high altitude tests known as Operation Fishbowl. These tests were Thor missile launched warheads detonated at very high altitudes (30-248 miles) to evaluate the destructive mechanisms and effects of high yield explosions against ballistic missile RVs. Several test failures occurred with missiles being destroyed in flight by range safety officers when electronics failed (Bluegill), when rocket motors malfunctioned (Starfish and Bluegill Prime), or when the missile veered out of control (Bluegill Double Prime). The Bluegill Prime test was particularly disastrous since the missile was blown up while still on the launch pad, requiring complete reconstruction of the demolished and plutonium contaminated Thor launch facility.