How many 'O' ring straps are on the A-21 cargo bag?

The A-21 cargo bag is designed with two 'O' ring straps, which are critical for securing the cargo during airborne operations. These straps facilitate the attachment of the bag to various equipment or harnesses, ensuring stability and safety during transport. Having two 'O' ring straps allows for more versatile anchoring options, which can be particularly important when dealing with varying loads or conditions that may affect the stability of the cargo. This design consideration reflects the need to balance both functionality and security during parachute deployments. Other choices do not accurately reflect the number of 'O' ring straps designed specifically for this cargo bag model.