SBVT also points to the narration of a subsequent event in "Tour of Duty" (pp. 188–189). Brinkley opens the account of a four-day cruise by stating that "Kerry—who had just turned 25 on December 11, 1968—was a fine leader of his men". He goes on to quote Kerry's reflections in his notebook: "A cocky feeling of invincibility accompanied us up the Long Tau shipping channel because we hadn't been shot at yet, and Americans at war who haven't been shot at are allowed to be cocky." SBVT argues that this journal entry shows that the December 2 incident could not have involved enemy fire. Others argue that Kerry was referring to ambushes, a common misfortune for Swift Boats which Kerry had not yet suffered, or to the crew collectively, as he used the term "we" instead of "I", and most of his crewmembers clearly had been "shot at" before.