This document provides information about helicopter landing zone (LZ) training, including considerations for establishing and marking an LZ, communicating with aircraft, and criteria for medical flights. Specific details covered include: - Key aspects of establishing an LZ such as size, surface, slope, obstacles, markings, and approach path. - Composition and roles of air evac flight crews. - Safety hazards associated with helicopter rotors, materials, and rotor wash. - Procedures for securing an LZ and briefing flight crews. - Restrictions on hazardous materials transport. - Medical criteria to consider for helicopter transport.