The phrase "to launch the missiles" means to shoot or send out the missiles into the sky or towards a target. It refers to starting the missiles' flight towards their intended destination. Full definition
The villain Syndrome launches a missile at the plane, and the moments that follow are simply thrilling. (businessinsider.com)
Still, there is a difference between stealing in to rupture pipelines, and launching missiles against civilian targets elsewhere. (nigeriapoliticsonline.com)
Unlike the original game, your ball does not break blocks on its own, but can launch missiles in a chosen direction. (blog.us.playstation.com)