NATO?? You mean the U.S.? NATO is useless, so is Obama. Hillary would have made a better president then that little Karl Marx.
let them go, and come back in after they either make it or or go under water
when you are teaching a kid to swim, you try multiple times and have them try by themselves, catch them, have them practice the motion and repeat
you don't put them in floats or any other device that unnaturally keeps them on the water, they won't learn that it takes their own muscle to propel them accross the water