What's an incident that really terrified you?

An incident that really terrified me when our daughter was swimming in the pool and feel under and forgot how to push hersef back up to stand in the 1 foot of water.I was dazed for a second seeing her hands above the surface of the water and head under.I jumped off the patio and grabbed her and sat in the water holding her for along time and crying.I did not think this would happen in only 1 foot of water because shes much taller,but she slipped and panicked and forgot how to push herself upright to stand.The pool went in the garbage that day.I actually was sick to my stomach allday after it happened because of the fright and pain in the heart for her,i love her.:)