During a formal ceremony, what should you do if you are not in uniform?

When you are not in uniform during a formal ceremony, placing your hand over your heart is the appropriate action to demonstrate respect. This gesture signifies your honoring of the flag and the national anthem, similar to what is done when saluting in uniform. It signifies a personal commitment to expressing respect for the nation's symbols, regardless of attire.

Standing at attention, while displaying a high level of respect, is typically reserved for those in uniform. Remaining seated would not convey the appropriate respect expected during a formal ceremony, where active participation is encouraged. Bowing your head in respect might be seen in some cultural contexts, but in a formal U.S. military setting, the gesture of placing your hand over your heart is the standardized approach when not dressed in uniform.