Just to back up and emphasise what Ralph said;
The pilots fly missions with pre-determined targets and let loose, as someone earlier put it, "precision-guided bombs", that are not necesarily targeted by the pilots themselves.
They do not simply 'fly around for a bit looking for a target'.
The words 'accuracy' and 'precision' however, in terms of aircraft routing, navigation and bomb trajectory, is in terms of geographic positioning and spacial co-ordinates.
A modern fighter-bomber can approach a target at supersonic speeds with pin-point accuracy, it can fire missiles, (often controlled from forward ground positions or even from back at base), with millimetere accuarcy to exploit a weakness in a fortification or bunker etc.
However, if no-one has done their research, or they simply don't give a stuff, these weapons can target a hospital, house or school with equal, lethal accuracy. These missiles are accurate, not clever, they don't know the difference between a legitimate military target and a kindergarten.
In 1999, the Chinese Embassy in Belgrade, (Serbia), was bombed by the US by accident using "precision targeted missiles". This was because through poor intelligence and pure negligence, the "mission planners" punched in the location of the Chinese Embassy, mistakenly believing it was the location of their intended target. Rumours circulated soon after that the US so-called intelligence had used a tourist map of Belgrade City Centre to plan their attacks - the 'cartoon'-type map that exaggerates the 'places of interest'.
So, yes, the pilots are simply "doing their job" - they neither select their targets or 'pull the trigger' as such - so I hope it makes them sleep that much easier whilst they are instrumental in raining down death and destruction on innocent civilians.