Military, law enforcement, and emergency service (EMS) clothing includes jackets, coats, sweatshirts, hoodies, sweaters, shirts, pants, and shorts for outfitting personnel and adhering to uniform requirements. Military flight suits meet the design and fabric specifications required by the US military for flight crews. Tactical vests provide extra warmth and storage for supplies and have varying fit, design, and performance features. High-visibility vests are worn by public safety personnel to identify professionals and keep them visible in all lighting conditions. Public service hats help display professional identification while providing warmth and sun protection to the head. Uniform patches, emblems and accessories include items that affix to uniforms to represent occupation and rank, as well as clothing stays to keep ties, collars, and shirts in place.