The challenges, then, are many. First, given a smaller Army with less forward-deployed presence, the US must have the ability to rapidly project its forces around the world.
Rapid deployment requires massive airlift and sealift.
Proficiency at information warfare is essential, because many operations will be in unknown environments and depend on support from, and therefore intensive communication with, the Continental United States. This situation will place a premium on access to space systems and protecting forces deploying to places where missiles pose a major threat. Effective theater missile defense is the most complex challenge on the battlefield. It involves locating and destroying missiles before launch, shooting down those in flight and protecting soldiers at predicted impact points. The headquarters also ensures that all national missile defense efforts comply with relevant international treaties.