Mullin said on X that there was "no panic."
Members of the U.S. military have the legal right to refuse orders they believe are unlawful, but they risk violating military laws of obedience if the order is in fact lawful, experts in military law say.
The late-night change also unequivocally banned the display of any divisive or hate symbols from all Coast Guard locations.
A decorated U.S. Coast Guard Auxiliary leader was found dead in the waters of Lake Michigan in the north suburbs after he was reported missing earlier this week, officials said.
At least six people are dead and two others are missing after the boat they were on capsized in large swells on Lake Tahoe Saturday afternoon, according to the Coast Guard.
Officials said four missing armed flares have now all been located after one washed up on a Chicago beach.