The photo above shows the second, and
last in the operation pushover series. The rocket is setting on a four
legged launch pedestal on the simulated deck. During the test, the rocket
motor was ignited, but before it sequenced to full thrust, two of the pedestal
legs, which had been rigged with explosives, were blown out from under the
rocket. This caused the rocket to tip over on the simulated deck and
explode.