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

It would be fun to watch as the E9 puts the O1 in his or her place

Mysquadron commander would take a group of EM's to the chow hall on Steak Days. He loved to play "butter-bar." When we saw a butter-bar we'd get in single file behind our Maintenance Officer, a captain. The Colonel would be in the rear. The Lt. Would salute the captain and We'd each salute the Lt, by the time he got to the Colonel he'd expect a salute, and the Colonel would read him a riot act for not saluting him! Tended to put young butter-bar in their place

Saw this with my own eyes, the new ensign was chewing out a master chief on the main cargo deck of our ship. THE ensign had his finger in the master chiefs face. This went on for what seemed like eternity. After the ensign was done the master chief asked " are you done? Cuz now it's my turn! First don't you ever stick your finger in my face ever again! Second I respect that bar on your collar, but you on the other hand need to earn that respect. Third this ship will cease to function if it weren't for me doing the things that I do! NOW, get the@$!# off my cargo deck! The ensign went to the CO, and the CO told him that the Master chief was right and that when he (the CO ) had certain questions he went to the Master chief .

Yes they would obey the order. But best believe that O1 has NOTHING coming afterwards.

Only out of courtesy

He would comply but boy what a storm later in the Man's office.

Nope. He'd laugh.

Haha, No! Especially not in the Navy. Sorry Butter Bar... Hope you enjoy your new duty station!

Yes

Honestly, I would sit back and watch the fireworks...

Does he have to comply with a lawful order yes, but should he, no the disagreement in a nonprofessional manner taints the officer's judgement and ability to give orders to that CSM.

It would be a show.

I would of course come to attention as ordered, let the young officer spout whatever it was that was so darned important, then I would tell said young officer to report to the Commanders Office to explain to him/her as to why he/she had the audacity to brace the Commanders SGM. IF said officer ignored me, that would be fine also, because said officer would be hard pressed NOT to respond to an ORDER to report to the Commander. Luckily I NEVER was faced with this extraordinarily ill thought out exercise of stupidity. Most MP Officers are smart enough to NEVER do this.
In my Battalion, after their initial brief by the XO, new, young officers were told to report to the SGM for further briefing. After calming them down and telling them they needn't stand a Parade Rest, I had them sit in one of the comfortable chairs and I would explain how they fit into the Battalion, an overview of the Senior NCOs in their Unit, and then a more in depth view of their PSG. After this briefing, these young Officers were NEVER afraid to ask for my advice and I gave it as best as I could for the situation the Officer had.

Yes

Personally my Grandfather was an E-9 Radioman now (Electronic technician) at the time when he served and he told me stories. Anytime an O-1 - O-3 wants to command respect but not have the time in you better watch how you address them cause it doesnt matter if your superior if you dont kniw what your talking about. (I have personally never seen a situation like this in person)

Come to attention

Ones an enlisted, ones an officer...not much debate..... BUT, no one ever said 2LTs had common sense( especially a West Pointer).

I saw this happen once. Butter bar in camies, SgtMaj is Alphas. Walking in and out of a building at the same time. Over no salute. SgtMaj refused and in his demonic "go fuck yourself voice" responded with if you want a salute climb my rockers and get it. And walked inside

yes

I will obey all orders, so yes