I freaking love this scene. For me, it's like Armin's screams from Episode 5 of Season 1. It's equally powerful and emotional. And all the actors really screamed it (even in the Italian sequence actors tried to scream despite the fact that they've been holding it up). This moment is one of the best moments of Season 4 (at least for me). That's the reason why I love Attack on Titan (at least, it's one of these reasons) - there are moments where somebody can scream at the top of their lungs. And yes, there's a video on the RU-vid channel of Russian voice actors from StudioBand who dubbed Attack on Titan for Wakanim. In that video there's the backstage - behind the scenes - of voicing this moment. Both Falco and Gabi's voice actor and actress really pushed their vocal cords to the limit. And not from the first take.
English is one of the loudest I have ever heard I'm watching this at night and everybody heard the scream thinking someone is actually in trouble so they called the police