Hooray!! Fabulous news. I hope so much for answers, then arrests, and finally convictions and incarcerations in this case and many more here on WS and those we never hear about.
My thoughts on this really remarkable decision:
I'm hoping the FBI can quickly train genealogy researchers, as I think there may
possibly be a bottleneck of sorts which most people may not anticipate in their loved one's case...
Here's what I learned which may come into play until the art and the science meet and fuse by computer methodology not hand and visual searching:
When I was reading the very technical analysis regarding how the final tracing of DNA in the EAR/GSK capture occurred, a genealogy researcher who is renowned for their work traced the foreign crime scene DNA from more than one of his crimes ( in other words, they matched so were from a single individual) to a family tree, then had to narrow down the generations and exclude living persons who couldn't be GSK with help from the FBI, I'm sure.
The researcher said it was very painstaking work done by hand to trace family trees to living members and narrow them down to the right person. It took right at one year to ID him via DNA.
It's my current thought after reading the almost year long intense focus to get just one suspect identified via familial gedMatch or other publicly accessible results posted by a family member or members
that the FBI will be opening up a whole new type of genetic science now.
If so, it's remarkable , and I would so love to see it be almost perfected in my lifetime.
None of us were alive when the use of fingerprinting was first used as a very imprecise but best available tool to catch criminals. Look how far technology, and home DNA kits with websites to voluntarily post autosomal test results, have brought us. GEDmatch and all that will be developed by LE to keep preliminary comparisons of testing confidential will change criminology just like fingerprinting did over 100 years ago... or more.
The best case scenario is that the FBI has anticipated this type of need and they have personnel already trained to do via computer what the non-LE researcher did by visual searching of branches of family trees to help catch EAR/GSK. ( note- in the fairness of law, he has not been tried of convicted but is incarcerated awaiting trial, if he lives long enough.)
Addendum: With respect to every crime victim's family members, the exception to the long searches which could happen with a stranger killer's DNA is if a biological relative is the perp. in any and all unsolved murders. Those should already have been solved
if crime scene DNA from both the perp. and the victim was specifically tested for a familial link through the number of matching alleles, but I don't know that DNA always has been compared between victim and perp. because sometimes two ( or more) different labs test the two samples. Plus, a lot has changed since DNA test results have been allowed in court as forensic evidence. Also, sometimes, victims can have extended estranged family who aren't on anyone's radar, but who, in a very small town or isolated community, might yield fairly fast results now.
Sorry this is long. The science is a passion of mine, and so are the gratifying matching results.