Falling Skies is an American science-fiction post-apocalyptic dramatic television series created by Robert Rodat and executive produced by Steven Spielberg. The series stars Noah Wyle as Tom Mason, a former Boston University history professor who becomes the second-in-command of the 2nd Massachusetts Militia Regiment, a group of civilians and fighters fleeing postapocalyptic Boston following an alien invasion that devastated the planet six months before the events of season one.