Solocmv,
All RAAF pilots are taught how to fly formation and as an extension to that, how to fly instrument apporaches in IMC concluding with a pairs or three ship formation landing. Even in thick cloud you can see the aircraft and the cues you need to fly in form. It is good incentive to stay in close. Obviously there are bug out procedures if you do go blind. All and all an effective way to get multiple aircraft around in IMC and allows for a means of rescue if an aircraft has instrument, or nav aid malfunctions above the gloop. You just get another aircraft to RV and off you go together back to base.
