NYS DL - valid New York State Driver's License - New York State Department of Motor Vehicles (NYSDMV), SO - Security Officer license - New York State Department of State Division of Licensing Services (DOLS) PHYSICAL REQUIREMENTS: Heavy - This category includes physically intensive work such as lifting heavy materials (up to 100 lbs.), climbing ladders, crawling into tight spaces, and working on uneven, slippery, or elevated surfaces.