How many breakaways are needed on the M149A2 water trailer?

The correct number of breakaways needed on the M149A2 water trailer is one. This refers to the safety feature that is designed to prevent the trailer from becoming detached from the towing vehicle. In the case of the M149A2 water trailer, one properly functioning breakaway system is sufficient to ensure the trailer will be secure and can effectively respond to any incidents during transportation. Understanding the equipment specifications and safety features is crucial for preventing accidents and ensuring operational readiness in field conditions.