Correctomundo!
My certification is lapsed.
This goes down in the annals of questionable parenting...
My daughter and her friends were having a pool party. My daughter knew how to swim, but her best friend didn't. The parents retired from the sun to the porch, which was in view of the pool, but not close.
I couldn't believe Friend's mother was comfortable being so far from her non-swimmer, and was probably visibly nervous when Mother told Non-swimmer she could go in the deep end, but had to hold on to the 'stairs' that go down in the pool.
I kept my eye on non-swimmer from the porch and when her head went under I stood up. Another parent was watching and made a run for the pool. My daughter (YAY) swam under her and pushed her up and to the stair.
Non-swimmer's mom, turned, surveyed and turned back to the conversation!