An earlier photo shows a guy with the name tag of Raugh and the rank of colonel. Like the majority of today’s field grade officers, he’s likely hard left and would be a willing member of the “resistance”. He’s a budding general officer.
There’s probably a story there. But if I noticed from a still shot, you can bet President Trump did. Maybe the guy had been up for 48 hours or something that made him very tense.
While it is a great honor to host POTUS at a military base, it has to be a PITA. Could be the guy got notice a short time before that Trump was coming and was stressed by all the arrangements that had to be made. And if something goes wrong his career could be over.