Laser weaponry (Red Alert)

"Sweet mother of... LASERS!"
 * Peacekeeper witnessing Lasers coming out of Jeffersons eyes

Lasers were used as a weapon for a long time.

RA2
Floating Discs were using high powered lasers effective against all targets.

RA3
Mt Rushmore had three heads protecting the 4th Heads superweapon from attacks.

Also The King Oni were also armed with Lasers.