2010 ) . In sum , the weight of the competent and probative evidence of record therefore fails to establish that the Veteran ' s psychiatric disorder had its onset during active duty service or any period of INACDUTRA or ACDUTRA , nor is it related to any event during service . The preponderance of the evidence is thus against the claim for entitlement to service connection for a chronic acquired psychiatric disorder , to include PTSD , MDD , and anxiety . In reaching the conclusion above the Board has considered the applicability of the benefit of the doubt doctrine . However , as the preponderance of the evidence is against the claim , that doctrine is not applicable . See 38 U . S . C