It was supposed to keep them waterproof down to 15 meters. The floatation vests were made to not hamper us swimming like a normal life vest and just h...lped us float up to the surface. It would also get our head out of the water if we got into trouble. All we needed to do was go completely limp for them the work. Anyone who activated theirs would fail and have to start over tomorrow. The vests had a pocket for our white canes."Any questions before you head out," a man asked.A girl somewhere near. And, while some rational part of my brain was still struggling with the morality of a woman being totally dependent on someone for their well-being, the testosterone won this argument and I was soon thrusting my hips so that I was entering her throat with each thrust.Angela moaned when she felt me respond and I realized that she was masturbating with one hand as she fellated me. Seeing her doing that was enough to put me over the edge and soon I was giving her what she so desperately. Finally, I came with a huge gushing load when my mom had deep throated me. All my load shot directly at the back of her neck. To my surprise, she swallowed all of it!My dick went soft after that. My mom told me that it will get back to "its feet" in no time. In the meantime she ordered me to perform oral sex on her. I quickly got down to her pubic area and removed her panties. She took her bra off. I was standing on my knees at her feet and saw the majesty of her naked beauty for the first time. Thebasement was cool and damp, and my bare bottom was just a little tooprominently displayed for comfort.Then there was a dead silence. I couldn't hear a thing. My arms weregetting awfully tired and ached from being dragged up that way, and Ididn't know what time it was. It must have been at least an hour beforeI heard footsteps walking towards me again. Finally I heard the sound of people returning to the room. There wassome movement near where I was tied to the ceiling but I could not.