On Nov. 8, I will vote for Hillary Clinton. Between now and then, I will do everything I can to ensure that she is elected as our 45th president.

Two strongly held beliefs have brought me to this decision. First, Mrs. Clinton is highly qualified to be commander in chief. I trust she will deliver on the most important duty of a president — keeping our nation safe. Second, Donald J. Trump is not only unqualified for the job, but he may well pose a threat to our national security.

I spent four years working with Mrs. Clinton when she was secretary of state, most often in the White House Situation Room. In these critically important meetings, I found her to be prepared, detail-oriented, thoughtful, inquisitive and willing to change her mind if presented with a compelling argument.

I also saw the secretary’s commitment to our nation’s security; her belief that America is an exceptional nation that must lead in the world for the country to remain secure and prosperous; her understanding that diplomacy can be effective only if the country is perceived as willing and able to use force if necessary; and, most important, her capacity to make the most difficult decision of all — whether to put young American women and men in harm’s way.
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