He filmed his scenes for "Balance of Terror" on Monday 25 July 1966 at Desilu Stage 9 and his scenes for "Dagger of the Mind" on Thursday 11 August 1966 , also at Stage 9. He filmed his scenes for "Miri" on Monday 22 August 1966 and Wednesday 24 August 1966 at Stage 10 and on location at the 40 Acres backlot.