The tribute group set up in Mark's honour on Facebook.
One of the tribute photos set up on Facebook for Mark.
The tribute left by Mark's sister Jaime on Facebook.
Mark Quinsey (right) with friend Gary Smith.
Mark standing proud in his army uniform.
Floral tributes left outside the Massereene Army Base, Antrim in Northern Ireland.
A soldiers belt left beside floral tributes.
People gather at the scene of the shooting for a prayer service.
A young boy leaves flowers at the scene of the shooting at Massereene Barracks in Antrim.
Flowers and cards left outside the Massereene Army Base after two soldiers were shot dead outside the base at the weekend.
Brigadier George Norton after speaking to the media outside the Massereene Army base.
Brigadier George Norton looks at the floral tributes left outside the Massereene Army base.
Sapper Mark Quinsey with his mother Pamela (left) and and sister Jaime (right).
Prime Minister Gordon Brown (right) and Security Minister Paul Goggns (second right) meet with Northern Irelands Deputy First Minister Peter Robinson ...
Prime Minister Gordon Brown (left) talks with Northern Irelands First Minister Peter Robinson (centre) and Deputy First Minister Martin McGuinness (ri ...