In the link you will see the evidence of this "Veterton" who is rated "GOOD" on your system.

My encounter with him was 2 days ago, flying and spamming SMAW's without reloading and also invisibility. 

Video speaks for it's self. 
Youtube -
https://www.youtube.com/watch?v=hbKSXNO8eCI&t=1s

Battlelog Stats - 
http://battlelog.battlefield.com/bf4/soldier/Veterton/detailedstats/1924080752/1/

Kind regards,
Bronstantine