Signature Wound: Rocking TBI is Pulitzer Prize-winner Garry Trudeau’s third collection of Doonesbury comics examining the effects of combat on soldiers in Iraq.Signature Wound: Rocking TBI completes a trilogy of Doonesbury books that examines the impact of combat on American soldiers in Iraq.A twist of fate brings B. D. to the bedside of SFC Leo Deluca (a.k.a. Toggle), a young HUMV driver and headbanger whose love of ear-bleed battle music had sonically distracted him enough to get his vehicle blown up. Missing an eye and suffering from aphasia, Toggle fights to recover from traumatic brain injury (TBI), a journey of recovery that brings out the best in B. D., his former commander. Toggle's tattooed, metalhead mom initially has reservations about his improbable Facebook romance with an MIT tech-head named Alex, but love blooms.