FEDEX has been installing main deck fire suppression for a few years. They even bought the company (or the product IP) that developed the system. Have to be careful with any containment device, unless there are fire/smoke sensors installed as well. Without knowing that you have a container with a fire you could end up in just as severe of situation as not containing the fire. Containment only works for a given length of time. Don't want to be even further away from a safe harbor when you get notice there is a problem.