Good. Good. Time to reload. It gives the thing time to retarget Gordon while there's no rocket in the sky, but that can't be helped.
( Now here you are with your faith and your Peter Pan advice )
It's the most demented child's game in the world. If you can see it, it can see you. Even with the laser Gordon can't fire and forget, because if the beam crosses any other object before reaching the gunship the rocket will divert course to the point where the beam terminates. And he hasn't got anywhere near enough rockets to waste one on the roof.
( You have no scars on your face )
If there is anything or anyone else in the world right now, he's forgotten it. What matters, the only thing that matters, is taking that damned synth out of the sky. And if that means getting hit, well, so be it.
( And you cannot handle pressure... )
There's room. He fires again- and again, as soon as he has the space and the line of sight.