Two minutes after launch, a booster malfunction forced a command destruct. The
booster and spacecraft fell into the Pacific Ocean between Vandenberg Air Force
Base and San Miguel Island off the coast of California.
The radioactive
fuel for the two generators (plutonium 238) was contained in two high-strength
alloy and graphite capsules, which had been designed and tested to withstand
ocean impact and seawater corrosion in case of such an abort.