This is such a fascinating case and I want to say great work by so many on this site.
My thoughts: first on the father's supposed suicide- not a chance it was suicide in my opinion. Whether Dellen pulled the trigger or not ,we may never know, but I'm hopeful that there's enough evidence that the truth with come out eventually.
There's a striking similarity between the circumstances in the Millard family and the Glen Davis case.
Glen Davis gave 20+ million to world wildlife fund and other conservation charities and by all accounts was planning to give most of hi estate to charity as well. Cousin Marshall Ross, more like a nephew, was given a free ride by Glen for years- free office space, free secretaries, 2.5m loan which he never repaid, free trips, free everything and he continued to blow other people's money left and right. Knowing the free ride was about to end he hired hit men to take him out, not once, but twice as the 1st baseball attack failed so they switched to guns 2 years later. Guess who delivered the eulogy at the funeral? You got it ..Marshall ross, who also sat beside the widow on the plane to comfort her as they flew to a wilderness ceremony I believe in alberta to celebrate Glen's generosity, where Marshall delivered the speech as well.
One thing I read quite a bit here that I wanted to comment on- so many people have written "how could they...that is so evil...I can't imagine someone doing that etc- ", you can't attach human characteristics and feelings to sociopaths- these people are animals not humans. Killing a relative then delivering the eulogy and comforting the widow etc- so try not to attach human characteristics to these pieces of garbage as they are clearly not like 99.9% of us.
I think it will come out that dellen was less than pleased about the $8m+ put into the new hangar and the thought that his Dad was entertaining the idea of giving more and more of the estate to conservationist charities was too much to deal with.
I think that it's important to note that people like dellen and marshall never worry about laws or getting caught as in their minds laws are for "normal" citizens and they were above the law.