the memory of his time aboard the Minbari cruiser blocked (though this block would not be permanent and would break down years later). Sinclair — and the Earth Alliance — believed that he had blacked out from the acceleration. When Babylon 5 was brought into operation in 2257, Sinclair was selected by the Minbari to command the newly constructed station. He was selected over many more senior officers, including Colonel Ari Ben Zayn, all of whom had been vetoed by the Minbari (they had stipulated that they should approve the choice of Station Commander, as they had shared the cost of construction). In January 2259, Sinclair was reassigned as ambassador to Minbar, where he took command of the Rangers. He was succeeded at Babylon 5 by Captain John Sheridan. In 2260, Sinclair received a 900-year old letter from himself on Minbar, revealing that he was not the reincarnation of Valen, as the Grey Council believed, but in fact Valen himself. Armed with this knowledge, Sinclair took Babylon 4 back with him 1,000 years to aid the Minbari in their first war against the Shadows, and in so doing, fulfilled Minbari prophecy by becoming the One Who Was. It was here that Sinclair used the triluminary to transform himself into a Minbari, thus fulfilling the legend about Valen being "a Minbari not born of Minbari", also explaining why the triluminary responded so strongly to him during his interrogation by the Grey Council, as it had been programmed to respond to his DNA. Characterization The character of Jeffrey Sinclair has been subject to several literary analysis, for example as a hero and as a leader. Conceptual history After one full season, due to health issues, O'Hare and series executive producer/creator J. Michael Straczynski made the mutual and amicable decision for the character and actor to depart as a regular. O'Hare subsequently reprised the character of Sinclair briefly in season two and a two-episode guest appearance in season three, enabling the show to wrap up loose ends. As a result of this departure, there are several minor inconsistencies between the first season and the remainder of the show, most visibly in "And the Sky Full of Stars" and "Babylon Squared". At O'Hare's personal request, the full reasons for his departure from the show were kept secret until after his death in 2012. The following year, Straczynski revealed that O'Hare struggled with delusions and