The records show that frankincense was produced here as far back as 7,000 BCE. He produces an army knife. He used to be a member of the Sultan's Special Forces. With a practised flick, he cuts a strip of bark from the trunk of one of the Boswellia sacra trees. Pinpricks of milky-white sap appear on the wood and, very slowly, start to ooze out.
— From Frankincense: Could it be a cure for cancer? at BBC News, with many thanks to Joe for the link!