Hello son, I love you too, blessings for you and your family, very good presentation of the whistle here in my country we call it whistle and whistle too, it is used a lot for when there are games in schools, in neighborhoods, etc. For example, in my area where I live, we have it in every house, just in case an emergency arises, a criminal is breaking into a house or a neighbor has a health problem, and it has worked.
I wish you success in everything you undertake. A hug from me.