The annual report on the weather-modification activities of the Air Weather Service discusses the techniques, procedures, and results of the projects undertaken during FY 1971. Its primary purpose is to inform AWS field personnel on the weather-modification progress enjoyed during the year. Detailed reports of the individual projects are published elsewhere when warranted. COLD WAND, COLD FLAKE, COLD COWL, COLD CRYSTAL, WARM FOG, and COLD RAIN are the activities covered ...