dec. 6, 2153. Andorian Imperial Guard Commander Shran and his warship track Enterprise down in the Delphic Expanse to offer Captain Archer help as an ally, and together, the two former adversaries plan to steal a prototype of the Xindi's planet-destroying superweapon. As a confrontation with the Xindi looms, Lt. Reed gets help fixing the NX-01's damaged weapons systems from a striking Andorian female, Lt. Talas, a contentious officer with her own agenda. 
Guests:
| 
Scott MacDonaldTucker Smallwood
 Rick Worthy
 Randy Oglesby
 Jeffrey Combs
 Molly Brink
 Granville Van Dusen
 Josh Drennen
 | 
asas
 as
 as
 as
 as
 as
 as
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Xindi ReptilianXindi Humanoid
 Xindi Sloth
 Degra
 Shran
 Talas
 Andorian General
 Degra's Assistant
 | 
 
Production : #065
| Written by : |   |   Chris Black | 
| Directed by : |   |   David Livingston | 
 
Credits 'Proving Ground' : 
Complete credits
 
Notes :  The Andorian general was Ted Sutton in the beginning of shooting, but new scenes were necessary while the actor was unavailable. As a consequence, a new actor, G. Van Dusen, was chosen for playing this character. All the recurring Xindis return, S. MacDonald for the 2nd time, R. Worthy and T. Smallwood for the 3rd time, and R. Oglesby for the 4th time (Degra, who will have appeared a total of 11 times during the entire season 3). J. Combs come back as the andorian Shran for the 4th time. He previously played Krem, one of the Ferengis, in 'Acquisition' (ENT, s1), Brunt the Breen in DS9 (s7), but he is mainly famous for his recurring role as the Vorta Weyoun in DS9.
 
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