The problem is that a thrown hand grenade is detectable by the system, but well under the limit.<p>One publicized case of a soldier in a vehicle &quot;protected&quot; by this system but killed by a tossed hand grenade or hit by a grenade launcher from long range (ordinary 40mm grenades are only fired at about 75 m&#x2F;s <i>at the muzzle</i>), and there will be calls for this value to be adjusted.