Y37.241 - Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilian Y37.2 - Military operations involving other explosions and fragments Y37.24 - Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device Y37.241 - Military operations involving explosion due to accidental detonation and discharge of own munitions or munitions launch device, civilian