I'm not currently in Yuma, but I was qualified there and all that. Yeah the CERAP is 24 hours and the airspace is sort of hard to describe if you don't know the area. They have 48 NM to the north and 26 to the west and 46 to the east. Surrounded by restricted areas and moa's. Basically if you look at the L-5 chart on sky vector you get a good sense of what they have. Blythe to mexico, heeds to judth and all the area in between.