Two Different Outcomes....
In the first story, a man acted heroically to save the lives of others, and paid the ultimate price ("Greater love hath no man..."):
In the second story, a man defended himself and survived:
The obligatory disclaimer to call 911 is the last comment of the second story, but that would not have helped the first victim, and probably not the second either had he not been armed and willing to defend himself and his family.
Condolences to the family of the hero who perished, and the hope that the perpetrators of the crime are swiftly brought to justice.