"Men in Black" concerns, briefly

• "Men in Black" extras, for short
• "Captain Video" figures, for short
• Infiltrators among us, some say
• "Falling Skies" extras: Abbr
• Visitors from another planet: Abbr
• X-files subjects, for short
• "The War of the Worlds" invaders, briefly
• Some "Star Trek" convention costumes
• Figures in some "Twilight Zone" episodes, for short

Wikipedia Word definitions in Wikipedia
ETS is an abbreviation of: