How would you react to an E2 who "smart mouths" you in formation?

Leave the formation at attention. Tell the E2 to return to quarters and pack his sea bag and report to personal for discharge. Dismiss the troops to their assignments. Escort the E2 to personal and assist with the paperwork. THAT is not what happens but it should . If subordinates won't follow their leaders you can't win. You don't need to spend the time to convince the E2 to do the right thing, they will put descent in the group and that can not be tolerated.

Nip this shit in the bud quick. Toss his rack and have everyone in the berthing abandon mother f$&@#%g ship. Then exercise the dog piss out of them. Then let his berthing mates adjust his attitude accordingly.

Close his mouth swiftly!!!

Same as above

Back in the "OLD CORPS", I was an E-5 (Staff Sergeant), If that had happened to me, (in the Marine Corps the probability of such an event occurring was next to none.) that E-2 (PFC) would be grabbed by his stacking swivel, and pulled forward out of the group, to receive a severe discussion of his heredity, then given a few laps around the grinder until he realized that in the Corps, that sort of action is never permitted. He would also have been counseled by me on the proper way to do push ups for 10 - 15 minutes. It may possibly happen in the Corps, nowadays, but I doubt it. Sounds like a Dog face problem, and one that Marines never would experience!

Ok private let's go I will show you the proper way then I will show you how your mouth got you a lot more jobs because you over tinned your ass with your mouth

Had similar situation in early 80s i was a corporal holding a e7 slot gave a pfc a job to do he refused i told him i hadnt started being an asshole yet but i could he still refused at that point i told him we were going to the 1st sgt office if i had to drap him there but to my suprise i was told to apologize to the private and was told i could be broughr up on charges because of the asshole comment

For his disregarding me, his entire flight/unit would be punished, I.e Full Metal Jacket

Sounds like some extra training digging fighting positions after you have informed the poor stupid bastard that his ass belongs to uncle sam and he doesn't have a choice. Plus latrine councelling should be in order

Time to put skillcraft to use and seek ucmj action...