comment: >
  
  If you believe the armorer though, she claims that the dummy rounds they received were defective and there were live rounds mixed in.  Still on her though as she should have tested the box and thrown it all away if she found even a single defect.
context: I still don't under why there was live ammunition there on the first place >
  
  They were shooting live rounds from the gun during breaks. Would say the armour is 80/90% to blame for being live rounds.