It does look like there might be a connection between the Knoxville Shooter and the UU Church that he attacked. In the past his wife attended the church. This might have had an influence on the selection of the church to attack. Here is part of the story relative to the shooters wife:

Time is so important, so why spend it writing a new policy and procedure manual? You can spend time researching, planning, and wondering if your plans will succeed…but why do that when we have already done the work for you? You don’t want to spend time reinventing the wheel. The importance of having your church’s policy and procedures in place BEFORE an incident happens is too critical. Knowing who is going to handle each responsibility, how it is going to be done, and documenting exactly how it was handled is expected in our litigious society.

An Initial Incident Review If we look at the Knoxville, TN incident and try to understand why the shooter decided to attack this church. Are there any signs of the impending attack and could it have been intercepted. About the Shooter The information is still somewhat sketchy but by using the press releases and news reports the following becomes apparent about the shooter.

Valery Fedorenko demonstrates the Double Kettlebell Jerk, known in competition as the Short Cycle Jerk, with Steve Cotter. This Competition ... tags: Kettlebell lifting Valery Fedorenko Kettlebells extreme fitness
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Security Officer Jeanne Assam shot Matthew Murray on Dec. 9, 2007 during his rampage on the New Life Church. Murray killed two church members during the shooting, but Assam's heroics helped prevent others deaths. Police ultimately determined the gunman was killed by his own bullet, but he was hit numerous times by Assam before he died. The former Minneapolis police officer recently did an in-depth interview with FOX affiliate KVDR-TV is in Denver. The video has a complete walk through of the shooting scene and Jeanne describe the event.