By Nate Raymond WASHINGTON (Reuters) - Two senior Venezuelan officials facing U.S. drug trafficking charges are accused in an indictment of taking payments from narcotics traffickers and alerting them to drug raids, according to a person with knowledge of the case. Nestor Reverol, the head of Venezuela's National Guard, and Edylberto Molina, a former deputy head of the anti-narcotics agency and currently a military attache posted in Germany, are named in the indictment that prosecutors are preparing to unseal, people familiar with the case told Reuters.