1-43. There are a few areas of waterborne planning that are vitally important for mission success. First, the infiltration should take place at night to provide the stealth and secrecy that the detachment needs. Second, the environmental factors produced by tides and currents must be suitable for successful infiltration. Therefore, the detachment must accurately plan the mission time to satisfy these two requirements. Personnel should use the reverse planning sequence to allow enough time for the most important phases of the operation to take place during the most favorable conditions. This sequence also enables the detachment to place emphasis on areas that are most critical to mission success. The following paragraphs explain each step of the reverse planning sequence.