Because Flynn protected Robyn Gritz who had been on loan to DIA from FBI.  Gritz's caseload including following up on the disappearance of Robert Levinson.  It was  2000   revealed recently Levinson was dead.  Levinson was on Kish Island (Iran) supposedly investigating illegal cigarette smuggling (BS) when he disappeared.  More likely he was investigating human trafficking, as Kish Island is know to be a trafficking hub.  Everything is tied together. SSA Gritz, Flynn & the FBI The Flynn Saga / What's Likely Going on (theory)