Quite. If you're in a sub or control room you don't need night vision. If you're in a situation of needing both colour appropriately. In a plane keeping priori

Quite. If you're in a sub or control room you don't need night vision. If you're in a situation of needing both colour appropriately. In a plane keeping priority on what's outside is needed - if you're flying visually. If you're instrument flying quite the opposite.