well...never like to hear of any mishaps with our stuff, but better here during a training exercise than in a hostile situation. Document how and why it happened and put it in the lessons learned folder and move on. Oh yes...better order up some more replacements too.
Now if it keeps happening and it happens more often than not and the loss in function is worse than the replacement cost then that is a bigger problem, I think. Does the cost savings outweigh the lost productivity? Don't know...