Could be a special rule for guard 'plenty more where they came from'. Let you shoot into CC but basically guarantee the death of the guard squad whatever the outcome of the shooting. So if you miss then the enemy is out of CC and ready to attack again amd your unit is 'poof' gone. You'd be able to tarpit units and drop pie plates on them, but each time you did would cost you a whole unit.
In such case you could even call it 'final protective fire' where basically the poor bloody guardsmen call in a strike on themselves, but have it only apply to artillery/ordnance/main weapons on vehicles.
Last edited by LazyG; 02-17-14 at 02:36 PM.