Former Virginia Republican Senator John Warner endorses Hillary Clinton for President

ALEXANDRIA, Va. - (AP) -- Former Republican senator John Warner is panning Donald Trump as disrespectful of the military and woefully unprepared to be commander in chief.

Warner is a five-term Virginia senator, veteran and former Secretary of the Navy. He was appearing with Hillary Clinton's running mate, Tim Kaine, in Virginia to endorse the Democratic ticket.

Warner said he's weighing in because he's "distressed" by Trump's comments that the military is in bad shape. He said Clinton is deeply prepared to be president, citing their time together on the Senate Armed Services Committee.

He said above all, Clinton is respectful of the military. He added: "That's one word that's totally lacking on the other side."

This is Warner's first time endorsing a Democrat for president. He endorsed a Democrat for senator in 2014.