If the grenade was real they would have met him.
Ditto what Pimpley Bum wrote.
#2: A Sargent in motion outranks a Lieutenant who doesn't know what's going on.3: An ordnance technician at a dead run outranks everybody.
And there is a door, what, five feet away?
Comments about an inability to pour piss out of a boot with instructions printed on the heel come to mind.