Given that at least 75 people were violently killed in 2016 on church/faith-based property in the U.S., should churches have security teams?

I'm not sure your understanding the premise, LTC Stephen F. .
I don't think anyone in this series of posts has suggested that church congregants go rogue and start forming independent security teams. It certainly should be coordinated as an effort through church members with a leader and each individual having had ample training. All should be on the same sheet of music, so to speak.

We are lucky at our church we have law enforcement officers that attend our church pastor has appointed them with security I Mann the cameras yes it's sad we feel the need for this but as has been stated this is not the world we grew up in in the 60s and the 70s God bless you all

Seems to me that would be up to the individual establishments. If they feel they need it then hire off duty cops but of the thousands of churches in this nation we are still talking less than 1% of those having incidents.

It's a matter of faith, I guess. They are protected by God but he wasn't around when Dylann Roof killed 9 people in the church at Charleston, or else looked the other way. So, it's up to the parishioners and their level of faith. If they eagerly await The Rapture then holocaust or hollow-point, what's the difference? The World has certainly changed over the last near 60 years I've been in it, and not for the better. We never locked our doors growing up and most left their car keys over the visor. Kids could play freely all over town and knew that if they wanted to eat they'd best head for home before the street lights came on. Parents expected kids to be out of the house all day and weren't concerned until you missed the evening meal, and then you went to bed hungry. A home invasion was when relatives came over for a Holiday meal, and murder or rape was something we only heard about in the news from the large cities. Too bad we can't turn back the clock because those were much simpler times. Hard to say what the cause is, but greed and hate have added their share.

How many people killed in Car Accidents. Ban cars!
Really, just like the Congresspeople who want security. I say MAN UP and go get your concealled carry permit. That would have stopped the problem at the baseball field.

Ehhh, what country are you living in?. Most churches I know of in high risk areas have a night watchman or security person or hire private security services.

Every church should learn protective measures, not for just shooters but disaster related events that can occur anywhere. Some churches have taken precautions and others have not. Those that have not are fish in a barrel waiting for someone to come in and create mass murder.

I live in the Commonwealth of Virginia and I would acquaint you with the facts of life as they are down here. Virginia is a “shall issue” state. While you may see a carjacking in the District of Columbia the State of Delaware or the State of Maryland they are very rare in Virginia because the ladies down here all carry and quite frankly will tie fire to the asses of criminals faster than anyone and they do not play fair! I have been a firearms instructor for years and they have a nasty habit of shooting at the center of mass. The only problem is defined as the chest area and not below the belt. When I tell them to aim at the center of mass I am not referring to someone’s’ TESTICALS!! I know it was an accident I lost count of the times I have heard that one! To idiots who are stupid enough to target women I have two quotes from Rudyard Kipling “When you're wounded and left on Afghanistan's plains, and the women come out to cut up what remains, jest roll to your rifle and blow out your brains and go to your gawd like a soldier.” And “WHEN the Himalayan peasant meets the he-bear in his pride, He shouts to scare the monster, who will often turn aside. But the she-bear thus accosted rends the peasant tooth and nail. For the female of the species is more deadly than the male.” Besides what are those clowns going to with 72 virgins after you have circumcised them with a firearm.
Then you add in all the retired military and civil servants who live down here and the retired cops of all types and this is not a safe state to commit crimes in.

Given that over the last ten years there have been an average of 440 people killed or injured by lightning each year in the US, should we not require that Faraday cages be installed in sufficient numbers to protect our populace?

Seems logical to me as it appears one is six times more likely to be struck by lightning than to be shot in church.

Sad times for sure, but there is a solution. If you want to spend your time an money on more video cameras or access controls, (all needed, but not effective in deterring the attacker), good luck. If you want to have your un-trained congregation, carrying, good luck. Houses of worship will likely lose their insurance coverage if they allow the un-trained to carry on the premise's. There is solution, one that will mitigate the risk of an active attack. The 3 things MUST happen to reduce the risk and save lives. 1) have a strong deterrent, 2) reduce rampage time and 3) apply triage much sooner. The Templar Rapid Response System is able to give your house of worship the ability to do those 3 important things to mitigate risk of an attack, and if the attacker is still committed, you will be able to reduce the number if lives lost.