It was one of the best-known Boston shootouts of the 1960’s. Cops cornered prison escapee Rocco Balliro, his twin brother Sal, and an associate at the Roxbury home of Rocco’s ex-con girlfriend Toby Wagner. They tried to shoot their way out, and when it was over, Rocco’s girlfriend and her 7-year-old son were dead. That was in February 1963, and six months later, here he is in custody at Division 1. Handcuffed to Rocco’s left had is Sgt. Tom Gavin of DA Garrett Byrne’s office. On the right is Det. Eddie Walsh, soon to be the cop mentor of future FBI agent Zip Connolly.