This is the first stand-alone scenario in the base game depicting a CASEX A24 advanced ASW scenario. There are three British ASW groups and at least three REDFOR submarines. The point of the exercise is to safely escort the auxiliary oiler HVU RFA Grey Rover to the RV area. The scenario has a predefined “ASW Exercise Area” featuring seven reference points. The video is 8:37 and there is no commentary provided. The first attempt is a loss (the focus vessel is sunk), while the second attempt is successful with no losses among the fleet assets.