A four-star United States retired general is sounding the alarm on key national security concerns after President Donald J. Trump shakes up the Pentagon staff less than one week after losing the election to President-elect Joe Biden.

“I have been shot at a lot and nearly killed a bunch of times,” said Gen. Barry Richard McCaffrey (ret.). “I‘m not an alarmist. I stay cool under pressure. Mark me down as alarmed. I just listened to Sen. Tim Kaine (D-VA) — wonderful, experienced, mature guy — say this is just payback to [Mark] Esper not being a loyalist. I don’t believe it. We’re watching a setup of some people who are unqualified for office to be in control of the 2.1 million men and women of the armed forces.”