: Led by Sergeant Brett Mahoney, they initially believe Frank and Lewis are working together, branding Frank a terrorist.
: The episode opens with Lewis attempting to "free" two caged parakeets after killing their owner. The birds refuse to fly away even when the window is opened—a stark metaphor for Lewis's own inability to leave his "mental cage" of war and PTSD.
: Frank corners Lewis in a kitchen. While Lewis holds Karen hostage with a dead-man's switch, Frank subtly guides Karen through the walkie-talkie on how to defuse the bomb by cutting the white wire. After Karen shoots Lewis in the foot and escapes, a defeated Lewis locks himself in a freezer and detonates his vest, ending his life.