You need to decide ahead of time whether you will be satisfied with a decent attempt to disuade / avoid burglary or intervene / prevent / capture burlars. If you plan on engaging the criminals then you need to give strong attention to whatever permissable weapons you might be able to deploy. If you plan on trying to scare them off but backing down if that doesn't work then you need to think defensively and think about signaling. If they aren't scared off by the radio / whistle / loud blast from air-horn / barking dog. They may be of the type that would wish to silence witnesses who have made themselves obvious.