The ceremonial guard is back on duty at the National War Memorial in Ottawa.  They are the first two sentries to return to duty at the monument, after the shooting of 24-year-old Corporal Nathan Cirillo on Wednesday.  Corporal Daniel Germaine and Corporal Mark Daigle are both Afghanistan war vets and from the 2nd Battalion of the Royal Canadian Regiment.  Prime Minster Stephen Harper was on-site to shake hands with the soldiers.