Final answer:
The primary weapon of LAAD is the FIM-92 Stinger missile, while secondary weapons may include light to medium anti-air machine guns and automatic cannons, depending on the unit's mission requirements.
Step-by-step explanation:
The LAAD, which stands for Lightweight Air Defense System, is a portable and man-portable surface-to-air missile system used by the United States Marine Corps. The primary weapon of the LAAD is the FIM-92 Stinger missile. The Stinger missile is a shoulder-fired, heat-seeking missile designed to engage and destroy low-flying aircraft and helicopters.
The secondary weapon of the LAAD is the M240B machine gun. The M240B is a general-purpose machine gun capable of firing 7.62x51mm NATO rounds. It is typically used to provide additional firepower against ground targets.
The primary and secondary weapons of the Low Altitude Air Defense (LAAD) refer to the armament used by a LAAD unit for air defense purposes. The primary weapon system commonly used by LAAD units is the FIM-92 Stinger missile, a man-portable air-defense system (MANPADS) that is used for targeting aircraft at low altitudes. The FIM-92 Stinger is a shoulder-fired antiaircraft missile with a high-explosive warhead and infrared homing guidance. The secondary weapons of LAAD units often include light to medium anti-air machine guns and sometimes automatic cannons, depending on the specific requirements of the mission and the unit.