Look, maths homework, I know I should have started you ages ago, but you don't need to threaten me by having the first question be about firing squads!
Seriously, though, that's really weird and unnecessary. Why would they do that?
@A_Staccato_Semibreve Because the people who write these problems think "oh hey, let's try to make some _real world_ maths problems", and then don't stop to think about how tasteful the end result is.
Shooting an inanimate target is one thing. Shooting a living target? Quite another...