an 18—year—old was stabbed to death barely a mile from here a few weeks ago. this park is just a couple of minutes' walk away from the school so lots of people will congregate here and they might play football or cricket in the summer, but it is also a potential dangerous flashpoint because there is a lot of criminal activity here as well — drug dealing, weapons have been stashed here so that is why the chaperones come, notjust to act as a point of reassurance for the children who use this, but also as a deterrent to the criminal activity. we found a machete into the ackers woods just up there. callam dunne has brought me to the park that he and the other chaperones patrol after school. it is known as the ackers and is right next to the ark boulton academy. when bad things happen, it's not often in the eyesight of the public so that's why green areas and big parks like this are often places where a lot of things will happen out of eyesight. callam says that because they spend so much time with the children, they get a sixth sense if something is wrong and can immediately detect