Americans are fast learning that churches are particularly vulnerable to the actions of murderous criminal actors. Motivations vary and include robbery, domestic spillover, personal conflict, mental illness, political differences, and religious bias.
I started defensive firearms training in 1993, back when the handgun nearly everybody used was a steel-framed Government Model 1911, and the preferred long gun was a Remington 870, Winchester 1300 or Mossberg 500/590 slide-action shotgun. Back then, the really high-speed guys installed ghost-ring sights on the shotgun and took pleasure in the fact that
The ability to safely move from Point A to Point B in rugged terrain is no laughing matter for military personnel operating in such environments as South America, Iraq and Afghanistan. The same is true for law enforcement and rescue personnel operating in the rural portions of all 50 states.
According to a number of sources in the medical field, a significant injury to an artery located in an extremity is capable of causing unconsciousness and leading to eventual death in as little as ten minutes.
In my opinion, the two finest intermediate fighting rifle carbine calibers readily available today are the 5.56mm and the 7.62x39mm. While some would clamor to add the 7.62x51mm/.308 Winchester and 6.8 SPC to the list, I would argue that there is a good reason that most first-world countries have drifted away from the full-size battle