I can promise that I would proudly admit to my Christianity. Hell and eternity are real, very real , to me, and the pain of dying, especially by being shot in the head, is fleeting. I have no doubt at all in my mind that I’d say I’m a Christian, it means more than to me that any other identity I have in this life, and eternity in hell and separation from God and all goodness for all eternity is more than I can consider to bear.
I would hope I wouldn’t act the same. Never having been in that situation, personally I can’t say for sure. Just trying to be honest.