Which of the following is NOT a primary mission of attack units?

Logistical support is not considered a primary mission of attack units. Attack units, such as attack helicopters and fixed-wing aircraft, are primarily engaged in offensive operations to destroy or disrupt enemy forces. Their core missions include reconnaissance to gather intelligence, security operations to protect friendly forces, and movement to contact to initiate engagements with the enemy.

While logistical support is crucial for maintaining operational effectiveness and is typically a function of support units, it does not fall under the primary combat missions of attack units. Attack units focus on engaging the enemy and providing direct fire support, rather than the supply chain or maintenance of resources. Thus, the correct response highlights the distinction between combat-oriented missions and support roles within a military operational framework.