Some of the recepies for homemade explosives use oxygen sensitive chemicals. Others are so unstable (the homemade PETN) That they are very unsafe to even be carried out from that home 10 to 15 feet.
If your job was to protect and serve for 45k to 60k a year would it be worth it to risk your life for some nutjob's idea of a good time? I would pass and torch it after doing the CSI and removing enough proof to put him away for a while.