With the New Zealand Herald political commentator John Armstrong forced to retire through ill-health, Gavin Ellis says a lot of institutional knowledge will go with him and his insight and fair-mindedness will be missed. Gavin also examines the end of Te Manu Korihi bulletins on Morning Report. Gavin Ellis is a media commentator and former editor of the New Zealand Herald. He can be contacted on gavin.ellis@xtra.co.nz