Here is an interesting article showing that the use of tourniquets by civilians can indeed increase chance of survival.

Brookline MRC is committed to training as many people as possible to the proper use of tourniquets.

Do your part and come attend a “Stop the Bleed” training in 2020.

https://www.trauma-news.com/2018/04/civilian-tourniquet-use-associated-with-six-fold-reduction-in-mortality/