Their investigation is very active and detailed and they are looking at everybody and everything,” Houston attorney Guy Womack, who represents rig worker Andrea Fleytas, said Tuesday after getting off a call with a Justice Department lawyer. “They’ve assured me Andrea is neither a target nor a subject. She is strictly a witness, if even that.”Womack said the call included no discussion about who or which companies might be charged, or when. Fleytas helped operate the rig’s sophisticated navigation machinery.