 Psychological tests, given to all the returning POWs, showed that McCain had "adjusted exceptionally well to repatriation" and had "an ambitious, striving, successful pattern of adjustment".McCain told examiners that he withstood his ordeal by having "Faith in country, United States Navy, family, and God".Unlike many veterans, McCain did not experience flashbacks or nightmares of his Vietnam experience, although due to the association with prison guards, the sound of keys rattling would cause him to "tense up".