He saw the woman mouth out "Should we make a break for it". While his lip reading was imperfect, his rather slap-dash training by a relatively friendly NCO did allow him to read it out slightly.
He sighed and drew out his .45 and shot the window, twice, breaking it. He then put it back in his holster and drew out the M-4.
"Alright!" He yelled in Russian. "Out of the Humvee! And keep your hands where I can see them!"
((Jedi: What the heck is going on???? I'm rather... lost with what your character is doing... and, for the record, it's Lieutenant Colonel Hannibal Smith, not Sergeant.))