The former ER star will play Tom Mason, a history teacher forced to lead a band of survivors in the aftermath of an alien invasion.
Wyle told IGN: "There's a guy who was the military armorer to our show and gave us all the weapons and all of our training. He used to wear a T-shirt that said, 'Happiness is belt-fed' [and] there's a lot of truth to that statement!"
He added that working with various types of weaponry during filming had been a "great" experience.
"When you sit there and you're firing off 1,000 rounds from a .50 caliber machine gun, it brings out the boy in you," he said.
However, Wyle claimed that Falling Skies provides a "pretty good balance" of action sequences and character-based scenes.
"You have to set the table with it being high budgets, and have lots of explosions," he said. "And then you earn those quieter, character moments.
"We have a pretty good balance of both and a lot of that is for budgetary reasons, since we can't have special effects heavy shows each [episode]."
Wyle previously admitted that filming Falling Skies had been "the most physically demanding work" of his career.
Falling Skies launches on TNT in the US on June 19 and on FX in the UK on July 5.
> Noah Wyle: 'Falling Skies like American Revolution'