Would an E9 comply if ordered to attention by an O1?

Sure just because he is an officer. But I'm sure most 01 would have enough respect for E9 to not

Yes

Whats the "boy" gonna do? Cant do a damn thing to the E9.

Short answer Yes. But the Lt./ENS has a lesson to learn when he does. Its not going to be pretty.

Officers are considered higher ranking than enlisted. No matter the officers rank.

I remember an old Chief of mine, who looked at the young Ensign and said to him "You know Ensign, and I'm going to call you Ensign, when I was a boy....about your age...I was taught to respect my elders..so I'm going to call you Ensign, and you can call me Sir!"

As for my own interactions, well I played rugby for some military sides and for a well known local civilian club, and I remember coming off the pitch after a match with my Division Officer/LT saying to me "Good match Chief, please remind me to never, ever piss you off!"

A good E-9 would comply but take it offline to resolve because someone who has reached E-9 has done it using common sense, finesse and great leadership. For that matter, I am eternally grateful to the SNCO who saw potential in me and became an advocate to refining my leadership instead of a adversarial hindrance. His years of experience became a stepping stone to who I am as a Lt Col and I will forever be grateful to his gruff, honest assessments. I am also grateful to the NCOs that became team players even when I stumbled because they knew I still had their backs. I have worked with some amazing NCOs.

My Dad was Navy. He regaled me once with a tale of a Lieutenant J.G who took it upon himself to dress down a Senior Chief for some percoeved infraction. Infront of junior enlisted like my Dad no less. In the midst of this, the XO who had known and served alongside said chief since antiquity likely predating the LTJG's conception. The XO leaned against a bulkhead and watched silently while the young officer continued his tirade, the Chief dutifully at attention. When the younger officer finished, still oblivious to the Commander's presence in the room, the XO spoke up finally, not to the LTJG, but to the Senior, their exchange somewhere along the lines of, "Hey Frank." "Hey Bill." The XO then told the LTJG to step out with him, not wanting to repeat the impropriety the younger officer had just committed by berating a subordinate in front of lower enlisted men. But when the Liuentenant sullenly shuffled across the flight deck to the next supply helicopter, kicked off the ship and bound for parts unknown (it was presumed Antartica), no one wondered why. The Senior Chief never lost his cool because he never had to. He didn't need the respect of the LTJG because he had the respect of someone who actually mattered.

The CSM would comply. that is protocol. I am sure that LT would never again make that mistake. I never seen it happen. But I know as a 1SG, I would come to attention but shortly afterward, the demons of hell would be loose in the closed door office of the commander

Yrs