The correct answer is "<span>immediate and proximal treatment at the disaster site, and expected return to the disaster site".
The immediate and proximal treatment at the disaster site (i.e. warzone) is essential to prevent the early progression of PTSD into more severe forms of anxiety and other neurotic instances; and in some cases, to prevent patients into going psychosis. The expected return to the disaster site is to ensure that the patient has overcome his mental trauma from the event and disconnect the association of the disaster site to the trauma.</span>