[Your scene - a shaky camera angle of Stark Labs, where Howard is literally shoving crates to people outside of the window, who are loading them into a truck. One crate opens at the lid, showing a variety of Stark-brand weapons, and he's pushing it out with the rest.]
[There is a banging at the door, and harsh yelling.]
Open up, in the name of the Serpent![Howard glowers at the door, but he doesn't waste time. He gets the last crate out, and hisses out to those loading the truck.] Take the back entrance. Get that to Stark Tower - they'll know who to get those weapons to. Now go, now! I'll hold them off.
[He goes for his desk, where he pulls out a sleek, silver weapon, and aims it at the door. It sends out a thin stream of frost and ice, freezing the door shut. The banging gets louder, then it goes quiet. Howard exhales, looking towards the window. They have gotten away, because the relief is palatable on his face, but then he frowns. There is the flash of Serpent uniforms trying to climb outside.]
[He's trapped, and he knows it. So he sets his jaw, and grabs his jacket. No one will take Howard Stark unprepared, so he pulls on his coat and smooths down his hair. Then he leans against his desk, where the phone is still recording, and waits for his last few minutes of freedom.]
[The sound of glass breaking fills the feed.]