See Item "3-K" in search Warrant #1 on first page of thread
My goodness.
If the perpetrator did indeed use a stun gun, and perhaps handcuffs or zip-ties, then it does seem that the perpetrator has some connection to law enforcement. At the time many police departments had tasers, but very few people outside the police did. Stun guns only became legal in Michigan a couple of months before Julia's death and only to people with a concealed pistol permit.
JT wasn't working for law enforcement or any security firm at the time. He would have legally been able to buy a stun gun in Michigan those months before Julia's death, but
not any time earlier. Perhaps this is why LE is interested in knowing where he was the days
prior to Julia's death. If he did purchase a stun gun then that might be used as circumstantial evidence. But let's not forget that JT actually past 2 lie detector tests and has an alibi. His experience with stun guns would be very limited if there was any. In loss prevention, security usually does not taser shop-lifters, because that would cause a big lawsuit that would dwarf any financial loss because of the shoplifting.
Also, I think that the CSI knowledge of JT would be very limited. I am not sure if he is interested in CSI, but my guess is that he is interested in hunting and martial arts and not much else.
If we have another look at the warrant, we see that another family member of Julia works in law-enforcement (see item BB). This person, TC, is a high-ranking member at the Taylor police department and is in charge of the investigative services division which oversees a crime lab. The Taylor police department did use tasers at the time.
I think it is very likely that TC has extensive knowledge about crime scene investigations, and is experienced in using tasers. He and his wife made damaging statements about JT (see Warrant, V, BB, TT). Julia visited them about a week before her death. I am not saying that this person TC must be involved. But all I am saying is that there may be more obvious people in Julia's circles that have a law enforcement background.
Another person connected to Julia with a law enforcement is RD (former cop), the person who runs the private investigation company that initially put out a $10,000 reward,
and then retracteded it. Could RD have put out the award in order to obtain information from the Ypsilanti police about the investigation?
And these are not the only people in Julia's circle with a law enforcement background.