October 25, 2023 11:15 pm Former ATF agent sheds light on Maine mass shooting investigation Scott Sweetow, a former agent with the Bureau of Alcohol, Tobacco, Firearms and Explosives, talks about the shooting that killed 22 people in Lewiston, Maine. US & World Videos 1:35 Man fatally shoots self on Worcester highway after killing another man, police say 1:44 Weston police warn of targeted iPhone package thefts 2:11 Investigation continues after Green Line train derails in Cambridge 1:04 Brian Walshe appears in court for latest hearing in murder case over wife's death 1:50 Derailed Green Line T train spells chaos for commuters from Boston