Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A katsa is a field officer of . He or she collects information and runs agents, similar to the of the . The word 'katsa' is a hebrew acronym, meaning "Collections Officer". There are typically 30-40 katsas at a time, operating mainly in and somewhat in the . They have operated to a lesser degree in and . Some sources even suggest that they have had a presence in the in a unit called AL.[ source ] Most of the information being gathered for Israel is on the . Because it is more difficult to operate in Arab countries, the Mossad recruits many of its agents in Europe.[