Explanation: The new Delta IV Heavy Launch Vehicle is the largest rocket ever to be launched by the US Air Force.
The Delta IV Heavy is capable of launching over 23,000 kilograms into low Earth orbit.
The first launch of the Delta IV Heavy occurred last month and was largely successful with the exception that the boosters shut off several seconds prematurely.
Boeing's Delta IV Heavy is the largest of the Delta IV series, packing the punch of three rocket boosters instead of one.
