What good comes out of the struggle to save Malachi?

I think they have to try to save Malachi. He was shot trying to help the whole group. Malachai was the first person Randy trusted with the knowledge of the impending bombs, precisely because he knew Malachai would rise to the occasion. Malachai died doing exactly that—offering to put himself more directly in the line of danger in order to ensure their success. Malachai stayed true to Randy's expectations of him to the very end, which speaks volumes for his character.