Uhhh, who knew that the DoD (or at least the authors) believe we will be moving into subterranean megacities? >"Future battlefields in 2050 are projected to be

Uhhh, who knew that the DoD (or at least the authors) believe we will be moving into subterranean megacities? >"Future battlefields in 2050 are projected to be dense, urban environments or subterranean megacities that will challenge identification and tracking of targets." p.g. 16