Igniting its three main engines in a staggered sequence for the first time, a United Launch Alliance Delta 4-Heavy rocket for U.S. national security is scheduled for liftoff from California today (Aug. 28).
Igniting its three main engines in a staggered sequence for the first time, a United Launch Alliance Delta 4-Heavy rocket for U.S. national security is scheduled for liftoff from California today (Aug. 28).
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