The primary objective of a DASO is to examine the competency of the Boat's Company to safely, successfully and competently launch a missile under simulated operational conditions. It also tests the Boat's Weapon System post Upkeep. A failure in the firing range's telemetry calls for a safety destruction of the missile. It does not invalidate the Boat's DASO and operational fitness. It's an opportunistic exercise in political point scoring and sod all to do with the Andrew's day job nor the effectiveness of the weapon.