The CIA sequence for a Predator strike ends with a missile but begins with a memo. Usually no more than two or three pages long, it bears the name of a suspected terrorist, the latest intelligence on his activities, and a case for why he should be added to a list of people the agency is trying to kill. No U.S. citizen has ever been on the CIA's target list. But that is expected to change as CIA analysts compile a case against a Muslim cleric who was born in New Mexico but now resides in Yemen. He is a U.S. citizen and until recently was mainly known as a preacher espousing radical Islamic views. Awlaki's status as a U.S. citizen requires special consideration, according to former officials familiar with the criteria for the CIA's targeted killing program. But while Awlaki has not yet been placed on the CIA list, the officials said it is all but certain that he will be. The CIA has carried out Predator attacks in Yemen since at least 2002, when a drone strike killed six suspected Al Qaeda operatives traveling in a vehicle across desert terrain. The agency knew that one of the operatives was an American, Kamal Derwish, who was among those killed. Derwish was never on the CIA's target list, officials said, and the strike was aimed at a senior Al Qaeda operative.