What do you think they're using in that video? Magic?
The whole idea behind that "force field" is the laser field detonates the missle before the missle can harm the friendly troop. Just like Star Wars.
I know it uses lasers, I'm just saying that the Purposed plan by Reagan (you ment Reagan right?), was to use laser beams and not shields to protect the US. But I can how the Force Field plan could have been influenced by Star Wars.