Mordred had made his way up 3 stories of the building before he began to hear a muffled conflict playing out above him, his Eyes Forward Sensor (EFS) below the compass his Pip-Boy had superimposed on his vision picked up 2 yellow and 2 red tabs moving about on the floor above him. He had noticed a gratuitous amount of deceased rad roaches on his way up the staircases, clearing the first hallway of each floor as he went. Clearly, whoever had entered the building and was now making all that ruckus had plenty of high caliber rounds to spare.
It was on the third floor when, while he did a quick re-check on his gear before heading up to the fourth floor, he heard the soft, unmistakable click of an anti-material rifle moving a round into the chamber. He froze, his already adrenaline filled heart began to beat faster as he turned slowly to face the new... not hostile? His EFS showed the stranger to be a friendly, but the man, clearly approaching 30 years old, had an anti-material rifle pointed at Mordred.
The man questioned Mordred, who swallowed his momentary shock and answered,"Uhm... my name is Mordred Smith, I am an employed caravan guard for Gun Runners, though I'm currently on leave for the next month or so, and I came here to investigate the whole gunshot serenade I'm sure you heard."
A loud thump from the floor above shook dust from the ceiling,"Friends of yours?"