Gunshots?

So, I may not have mentioned before now how the school shares the entrance and is essentially surrounded on all sides of our campus by the Bulgarian Police Academy.  This means that at any time of the day there may or may not be gun shots, artillery and other such exploding loud noises going off.  It is kind of distracting.  And loud... well, what can we do.  I am pretty sure the explosions are all blanks, so no one is in any danger of being injured (which is good)...but still... loud explosions during the day, afternoons, and early evenings...