Star Trek Sci Fi Blog mourns Bill Paxton's death who passed away on Saturday. Comicbook.com explains his cause of death was "from a stroke after post-op complications," following heart surgery which the poor guy was worried about. He was only 61.
Apparently Bill emailed Director Doug Liman (Edge of Tomorrow) with the message,
"Thanks for the good wishes. It will help me face this ordeal"
RIP Bill Paxton.