The Orbital Assault Operations is one of the largest branches of the USR Special Warfare Group, with a contingent being placed on each Warship capable of supporting their operations. The OAO, also referred to as Invaders, are sent in as one of the first contact forces from a Warship, with their task being to secure planet side positions, such as anti-aircraft positions, strong points and landing zones. They are also used to quickly reinforce positions, or provide direct attack just behind the frontlines, to help in break through actions. This is typically done in a highly coordinated drop assault consisting of a lance to a sub-section of Sangheili lead by a cadre of officers. Reinforcements may include the larger Heavy Orbital Insertion Pod, carrying specialists with heavy weapons to secur