First: That is not a reassuring thought. While I am convinced that Obama cares as much about President Trump's personal safety as he does about mine, that would be zero.
Second: President Trump's personal safety is in the far better hands of the Secret Service. I know several people in the Secret Service, and every single one that I have met is an enthusiastic Trump supporter. I am certain that they care about President Trump's safety more than they care about mine or even about their own.
Re : Post #3 ~
“I know several people in the Secret Service, and every single one that I have met is an enthusiastic Trump supporter.”
I’m not surprised. He paised the Secret Service in his acceptance speech!