Patient is WALKING with an ANEURYSM?
Shave ENTIRE HEAD for one small cut?
Doctor does haircutting and head shaving in OR? AFTER anaesthesia?
Same doctor does anaesthesia, operation and closing?
There's a power-up for that! It's called "Baikonur Surplus". It restores all satellites. Power-ups are offered at random in order to encourage experimentation, but "Baikonur Surlus" has the second highest probability (after the shield upgrade).
Alternatively, you can pracitce aiming without the laser sights. It's a risky tactic, but it pays off in the long run.
Yes. Also, if Earth's core is hit by anything, there are eruptions that speed up the process.