Note. To the best of my knowledge this is not based on any existing Fallout Equestria storyline, nor does it follow any particular plot in Fallout 4. This is just the narrative that popped into my head as I worked on this piece.
 
Octavia flinched and ducked further behind the speaker stack as bullets and shotgun pellets slammed into the speakers she’d taken cover behind. After a second or so the gunfire subsided and she heard the sounded of hoofsteps approaching the stage. Frantically the earth pony snapped open the wire stock of her submachine gun. As she did she could hear the ripping sound of Vinyl’s machine pistol.
 

 
Bbbbrrrraaaapppp!
 
Taking that as her cue Octavia popped up from behind the speakers and began firing her own shorter, more precise bursts of fire.
 
Rat tat tat tat! Rat tat tat tat! Rat tat tat tat!
 
Octavia’s 9mm submachine gun vibrated and shuddered in her grasp. Still she watched as her front sight dance across the chest of two gang members and they crumpled to the floor of the theater. This along with Vinyl’s fire forced the remaining gang members to retreat from the main theater floor. Having bought some time Octavia sprinted from behind speaker stack and moved for better cover.