Ticks out: Preventing the spread of Lyme disease
Senior Airman Moss Purcell, 436th Aerospace Medicine Squadron public health technician, applies dry ice to a piece of white cloth June 9, 2017, at Dover Air Force Base, Del. Dry ice, which is comprised of frozen carbon dioxide, is used as bait to attract ticks. (U.S. Air Force photo by Senior Airman Zachary Cacicia)