Gerald Shur was a DOJ lawyer who started the federal witness security program (WITSEC) in 1970. The program elevated the use of high-profile informants and is widely credited with helping bring down the mafia. Shur co-authored a 2002 book “WITSEC: Inside the Federal Witness Protection Program” with the journalist Pete Earley. From the obituary in the New York Times:
“Mr. Shur had standards governing which witnesses got into the program: They had to have real evidence against someone of importance, and they had to be in real jeopardy if they agreed to provide it. ‘I guarantee you,’ Mr. Shur said in the 2007 interview, ‘that the kind of people we accept are ones where if the guy testified on Monday morning and didn’t get protection he would be dead Monday afternoon.’ The program has drawn its share of complaints, especially early on, when the number of participants grew quickly. Some of those given new identities complained of inadequate support or security in their new lives, or of trouble with paperwork. And sometimes, since many protected witnesses were lifelong criminals, they returned to their former lives.”