3 rounds. If you are a 2L summer intern, you skip the first round. The second round ("panel interview") is with a bureau chief and a young ADA. They will ask one law related hypothetical so you need to know NY crim pro and they will ask one ethical hypo. The third round ("executive round") is with the two executives and you need to prepare an opening statement, which should be memorized and will be recorded. They will ask about your process making the opening statement (did you get help, what were the strengths/weaknesses of the case, why did you include/exclude certain facts, etc.). They also ask criminal and ethical hypos.