Sheep not afraid of low-flying Apache attack helicopter in north England

Earlier this month (March 7) the Royal Netherlands Air Force were carrying out manoeuvres over a training camp in northern Cumbria, which strangely didn't bother some nearby sheep at all.

This video shows one of the Apache helicopters, stalking their prey about 2 miles from the RAF camp over a field of sheep, who seem unaware of the war machine's presence overhead.