I never could understand the requirement for an SDO at BZZ. The SDO's just a glorified switchboard; if anything happens, you go to the magic file/bag and phone the required trade/duty bod to sort it out.
Why do we need this when there's a 24hr DOC in Stn Ops with a full team around him/her?
As for the Xmas day saga - maybe we'll all get into a room, hold hands, talk about our personal grievances and opt that SDO is a breach of our human rights and thus an illegal order
and just not do it?
Merry Christmas.
Uncle G