As I've posted before, I think the kids left Rexburg either between 9/24 and 9/30, or between 10/4 and 10/17 (day before TD's death), and if they did, it might help us locate them now.
I think the second window (10/4 to 10/17) is the least likely of the two, as too much stuff was about to happen in Rexburg in the lead up to TD's death (perhaps AC was paintball dude, Lori possibly consorting with Chad while TD was at her parents, etc.). Plus, if the kids were living in the town home much past late Setember, surely they would've been spotted by SB and son. But most importantly, AC had to head south then to shoot BB.
If the children did leave in this early window, where did they go? I guess Lori and/or Chad could've taken them to some prepper hideout, but that would've risked Chsd being seen with them, and TD wasn't even dead yet. Lori and Alex could've similarly dropped them off (w/o Chad), but they didn't really know anybody, and they certainly weren't familiar with remote prepper camps in the area.
And if instead of dropping the kids off, the plan was to kill them, AZ and some of the more remote locations along the way (ID, NV, UT, AZ) would've been smarter locations to do the deed than up near Rexburg. AC was familiar with the route going south, and would've been even more familiar with the surrounding areas as they approached AZ (think McStay case).
So if the kids left Rexburg the last week of September, who went with them? The possibles include AC, Lori, and MB.
AC was about to head south in Tylees's Jeep for the BB hit anyway, so I think he was the driver. Lori could've gone, but I doubt it (she wanted to spend time w/Chad while TD was at her parents, there were lots of things she needed to prepare for, and getting rid of the kids was sure to be unpleasant task). MB also could've gone (after all, it was her husband down in AZ who AC was going to shoot). But I think she perhaps stayed in Rexburg if for no other reason than to establish an alibi. So I think it may have just been AC and the kids that headed south then (with the children thinking they are going to stay with their grandmothers or at a friends..).
Many of my earlier similar posts focused on the vehicles coming up to ID and then the vehicles going back to AZ (and apparently AC even made a third trip back up after taking the shots at BB), but concidering all that, I think the locations of Tylee's Jeep during those 7 days (going from Rexburg to Alex's house in AZ) holds the key. Knowing that vehicle's itenerary might go a long way toward telling where the kids are (alive or dead).
It seems that vehicle GPS, cell phone GPS/pings, license plate cams, toll booths, gas station cc receipts and videos data could be collected along the most probable routes by LE to help determine the Jeeps itinerary and where it may have stopped - especially if it stopped in any remote areas.
It may be though that none of the occupants had cell phones with them, as Lori apparently confiscated Tylee's phone back in July, and AC may have wisely left his in Rexburg as an alibi of sorts. But who knows, maybe he took someone else's phone with him (maybe even ZP's..). It's a pain not having a smart phone.
Given that we may know what vehicle was used for those 7 days, and the general route it took, it seems there would almost have to be some forensic evidence out there that could establish the Jeep's itenerary and perhaps mark it's stops at remote areas - to help find the kids
