US Department of Justice, Criminal Resource Manual, no. 1906, Guidelines For INS Undercover Operations, part 8, let. D, para.1 ([Internet, 2018-06-13](http://www.usdoj.gov/usao/eousa/foia_reading_room/usam/title9/crm01906.htm))
[...] a designated supervisory officer shall review with each undercover employee prior to the employee's participation in an investigation, the conduct that the undercover employee is expected to undertake and other conduct which is expected during the investigation.