A traumatic brain injury is a recoverable yet complex injury with a broad spectrum of symptoms including headaches, memory problems, attention deficits, mood swings, and others. The MACE 2 diagnostic tool allows for health care providers to assess service members more comprehensively after exposure to a concussive event to better determine their care pathway. (Photo: Navy Petty Officer 2nd Cl. Jonathan D. Chandler, Fleet Combat Camera Pacific)