(just when mason teloported to the scp foundation) the cameras caught footage of mason teloporting..
back to present...5 hours later... the camra footage was looked through and then footage of mason was found person assigned for footage "huh what's this" he looks more closer at the footage and sees mason "this is an anomaly I must take it to the 05 council"
even more later the 05 council looks at the footage 01 "hm its seems an anomaly passed by" other council members agreed 01 orders guard to look for that anomaly(mason)