There’s the website tigerforcerecon.com which is operated by veterans I believe. I’ve used that for photographs before.
There’s a book self-published by the author this year called Tiger Force: Inward Season Three… Over by Leo Heaney. From the description, it looks like he is trying to defend himself and his unit against the allegations of war crimes that have been made. That bias is important when reading.
I would also look through the Notes section in Tiger Force by Sallah and Weiss to find any other sources you could access.
Other than newspaper articles originating with the reporting of The Toledo Blade, I’m not sure there’s too much more out there.