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

Discipline

Shoot him.

Bring formation to attention, relieve others of the command other than the one in question. Bring a request for the nearest available officer to join you. State the request to the E2 for the officer to hear again. Let the officer bring the evaluation to bear. In my day it would have been the rest of my fellow Airmen who would have beat me down for causing them the repercussions that were about to be had by all for this behavior. Today all you have to do is request gender , transformation treatment, and you don't have to even do physical training let alone your job!

Smile, say "okay, I love a volunteer," and find the crappiest assignment for the individual to do on top of the current assignment. Make sure it is done so others can see it as a reminder your the boss. Then continue smiling, and inform the individual if they wish to continue being disrespectful by disobeying a direct order, they are going on report, or getting a write up. If they continue being a dipstick, ask them if they are volunteering for other unwanted assignments.

You follow orders or someone may die from your actions or lack of.

Come down hard and fast,on this shit bird...

2 words.... "Tree line" problem solved

Throat punch him and make hit the deck, push-ups until he gives out

Ooof..... Easy answer. Tell them they need to follow a direct order from a NCO and inform them of they didn't..... Ft Lewis soul flood from the sweat has about to loose.....

I would march the young man to the First Shirt, explain why this is a response indicative of a sub-standard airman, all 3 of us would go in and see the old man and he would immediately be provided with an article 15, confinement to quarters and immediate dishonorable discharge process with separation from the service forthwith for failure to comply with a lawful order. If this clown made it all the way to E2 with this kind of attitude I would not waste the governments time and money on correctional counseling. He is to be jettisoned for the good of the service.