Pants, not shorts, must be worn. Women may wear knee-length dresses or skirts. Pants must be worn at the proper waist level with a belt and must not be baggy. Clothing must not contain vulgarity, drug promotion, or violent images/words. Men may not wear head covers, hats, or doo-rags. However, women are allowed to wear hats or head coverings, but they will be asked at security check points to remove them and are subject to search.