unarmed, unburdened their obligation is to salute. even in the video where biden repeats his earpiece "salute the marines" the Marines also do not salute him. regulation is to hold the salute until the higher command salutes back. that's not just disrespect Biden holds no U.S. office >The practice of saluting officers in official vehicles (recognized individually by rank or identifying vehicle plates and/or flags) is considered an appropriate courtesy and will be observed https://military.maryland.gov/mdng/Documents/AR600-25.pdf > “The President of the United States, as the commander in chief, will be saluted by Army personnel in uniform.