There were interviews played bu the actor, Joseph Cotte. The witnesses recounted how they had seen fiery objects land, and how death rays had wiped out thousands. One of Welles' actors even impersonated the President of United States. The show ended with an announcer screaming. His feverish commentary trailed of in a strangled scream.
strangled: squeeze or constrict the neck of (a person or animal), especially so as to cause death.
impersonated: pretend to be (another person) for entertainment or fraud.
trail: 拖, or more commonly used as a track, scent, or other indication used in following someone or hunting an animal.
feverish: displaying a frenetic excitement or energy
frenetic: fast and energetic in a rather wild and uncontrolled way.
commentary : broadcast