Which two units are known for their petroleum pipeline capabilities?

The correct answer highlights the specialized roles of certain units within the military that are equipped to manage petroleum pipelines, which are essential for ensuring a consistent supply of fuel during operations.

Petroleum Pipeline Transfer Operations (PPTO) units are specifically tasked with the transport, transfer, and distribution of petroleum products. Their mission focuses on ensuring that fuel reaches the operational units efficiently and safely, which is critical in large-scale combat operations where logistics can significantly impact operational effectiveness.

Similarly, Petroleum Support Companies (PSC) are designed to support the movement and management of fuel distribution systems. These companies play a vital role in the broader logistical framework that supports combat operations, working alongside PPTO to create a seamless logistical network for fuel supply.

The combination of these two units is significant because they both possess the necessary capabilities and expertise to efficiently manage the complex logistics of petroleum distribution in a combat environment. This specialization allows military operations to maintain momentum and effectiveness without being hampered by fuel shortages, which are often a critical factor in the overall success of military engagements. Other choices do not include the specific units primarily responsible for petroleum pipeline capabilities, making them less relevant to the context of the question.