My brother learned that you need to focus on cutting down the tree when you are cutting down a tree. Never mind that strange guy in the parking lot. Get him out of the way and then focus! This was a painful lesson and one from which he is still recovering.
Jane's Lessons Learned 
oh dear, I hope your brother is ok!
Oh, ouch!! I hope your brother mends soon! And tell him I learned that there are professionals who make their living cutting down other people’s trees, and it’s well worth the $$$ to hire them.
I hired people to cut down my trees after the Ice storm we had in 09 and paid them well. They did a great job and then came back and stole BMW car parts from my garage! Make sure they come recommended from reliable friends. Oh Steve, feel better soon!
I think he WAS the professional!!!!
Yeah… Kat is right!