Question

Dale seemed to be okay when he returned from the war in Iraq in June, 2004, despite witnessing his two best friends being killed when their tank exploded. Six months after his return, he began having nightmares and flashbacks about his experiences and became constantly vigilant. He would jump at even the slightest noise. Finally, his partner insisted that Dale see a therapist. The most likely diagnosis is

Answer 1

Post Traumatic Stress Disorder (PTSD)

Step-by-step explanation:

Lots of time people might not experience symptoms until a few months after an event. The traumatic event would be his friends being blown up in a tank, watching that happen could be very traumatic and he might have been shocked at girst to the point of no symptoms.