I applied online. The process took a year or more. I interviewed at Los Angeles County (Los Angeles, CA) in June 2015
Interview
Very long process. Took almost a year from applying online to getting an offer. They are very disorganized. The initial test is a common sense test. There is a personality test to weed out sociopaths and assess your attitude. You don't really have to know any planning.
Interview questions [1]
Question 1
Which statement do you agree with the most: A) I like all people; B) Sometimes I like to be alone.