Trump said to a group of amputee veterans that they got hit "pretty good" to their faces? Big deal or not or just a misuse of wording and expression?

The facial expression on the bearded guy with the gray jacket seem to go from smiling to angry when he heard the president say what he said.

Trump said to a group of amputee veterans that they got hit "pretty good" to their faces? Big deal or not or just a misuse of wording and expression?
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