It's kind of hard to have a conversation with a drill sergeant. On the plus side, he'd probably force you to take some APA.
Well, if he was off-duty you might be able to. Though knowing the Sarge, he;d probably ignore you or say something like,
"WHY AREN'T YOU AT YOUR DUTY POST, SOLDIER?!"
"...I'm off-duty, sir-"
"THEN FIND SOMETHING TO DO THAT DOESN'T INVOLVE
BOTHERING ME, YOU MO~RON!"
That said, I love that man. Really. Who else d'you know who forces you to wear the best armor in the game?