e. Marking. 1. LZs for rotary-wing aircraft are marked to: a. Provide identification of the reception committee. b. Indicate direction of wind and/or required direction of approach. c. Delineate the touchdown area. 2. Equipment and techniques of marking are similar to those used with fixed-wing DZs, lights or flares at night, smoke and panels in daylight. 3. An acceptable method of marking is the “Y” system. This uses four marker stations (Figure 21).