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A listing of call signs in use by the Earth Defense Directorate.
Call signs are used in communications between crafts and installations for purposes of identification, but are not proper ship names (e.g. Searcher).
- Earth Recon 1: Thunderfighter craft piloted by Capt. William "Buck" Rogers and Col. Wilma Deering during the Defense of Scout Three (BR25: "Planet of the Slave Girls")
- Scout Leader: Thunderfighter craft piloted by Maj. Duke Danton during the Defense of Scout Three (BR25: "Planet of the Slave Girls")
- Scout Three: Thunderfighter craft piloted by Regis Saroyan during the Defense of Scout Three (BR25: "Planet of the Slave Girls")
- Vistula Two: call sign for Kaleel's fortress in Vistula's Sea of Stone, used only by Stella Warden after fleeing Earth (BR25: "Planet of the Slave Girls")