Which aircraft can hold the least amount of cargo load?

The C-130 (J, H, and Stretch variants) is designed primarily for tactical missions and has a smaller cargo capacity compared to the other aircraft listed. This aircraft is well-suited for operations requiring versatility and the ability to operate from shorter runways, but it is limited in terms of the volume and weight of cargo it can transport.

In contrast, both the C-17 and C-5 are larger strategic airlifters with significant cargo capabilities. The C-5M, being the upgraded version of the C-5, has even greater cargo capacity enhancements, allowing it to carry larger and heavier loads over longer distances. The C-17 is specifically designed for rapid strategic airlift of troops and cargo, enabling it to move substantial amounts of supplies and equipment as well.

Thus, the C-130, while versatile and effective for specific missions, does not match the cargo load capacity of the C-5 and C-17, making it the aircraft that can hold the least amount of cargo load among the options provided.