What is not authorized unless approved and signed by the commander?

• A. Overhead spilling
• B. Surface spills
• C. Ground spills
• D. Water spills

Answer: (A)

Overhead spills involve a release occurring in elevated or overhead areas, where the hazard can spread quickly, affect personnel directly above, and require specialized containment and safety measures. Because of the increased risk to people, equipment, and the environment, these spills are treated as needing higher-level authorization and oversight, which is why they are not allowed to proceed without a commander’s approval and signature. Standard procedures typically cover spills on the surface, in the ground, or into water, since those can be managed with established cleanup steps and approvals within routine operations. So the correct understanding is that overhead spills require explicit command authorization, making that option the best answer.