Computers are used in many fields including education, health, business, science, government, entertainment, sports, and defense. In education, computers enhance learning and allow for distance learning courses. In health, computers digitize medical information, analyze disease risk, and help communicate for patients with disabilities. Businesses use computers to improve productivity, marketing, banking, and sales. Scientists collaborate globally using internet-based laboratories, and governments use computers for planning, control, and law enforcement. Sports utilize computers for statistics, tickets, training, game strategies, and safety equipment design. Defense applies computers to control vehicles, missiles, situational awareness, communications, logistics, platforms, and system design.