The concrete floors, walls and ceilings were all painted white. Stairs leading from the entrance door led up to two interrogation rooms situated behind closed steel doors on either side of the stairwell. The interrogation rooms were bare, apart from a couple of chairs, a desk and a wooden pallet. In one corner was an exposed toilet. The building was not designated purely as a safe house for interrogation; it could also double up as an FOB. The hard-standing outside, with sufficient space to land a helicopter, meant it could be used to house Special Forces in the event of a terrorist incident in the area. The entire compound was protected by a sophisticated security system. Along the mud access track, UGSs were buried at hundred-metre intervals. Their warning sensors could be set for vehicles or for people. Those in the track were set for vehicles; the lighter setting could easily lead to them being tripped by forest wildlife. More UGSs were buried at fifty-metre intervals in the ditch running alongside the compound.