Catch up with the filming for the fifth season of 'Falling Skies' Falling Skies is rolling out the major explosions for the final season. 'Falling Skies' TNT: Cast Teases Season 5, Hints At Importance Of New Aliens Already filming episode 3 for the fifth season, the TNT drama is ramping up the C4 usage to bring viewers one of the biggest explosions of the series.