Pararescue jumpers coast guard pararescue jumpers are trained to leap from helicopters into the sea to save boaters in distress. the rescuers like to step off their helicopter when it is "ten and ten", which means that it is ten feet above the water and moving forward horizontally at ten knots. what is the speed a pararescuer enters the water following a ten and ten jump? what is the direction of motion as a pararescuer enters the water following a ten and ten jump?